League Calendar – Denver Metro Area
2026 Season: Calendar, Deadlines, Days of Play
Summary Calendar
| League | Minimum Roster Deadline | Season Starts | Season Ends | Score Entry Deadline | District Championships |
|---|---|---|---|---|---|
| Trio | February 27 | March 21 | May 2 | May 23 | N/A |
| USTA Mixed 18 & Over | March 6 | April 5 | May 17 | May 25 | June 5-7 |
| USTA Adult 18 & Over | March 13 | April 13 | May 28 | May 31 | June 19-21 * |
| USTA Adult 55 & Over | March 27 | April 29 | June 12 | June 22 | July 10-12 |
| CTA Women’s Daytime Doubles | March 27 | May 5 | June 18 | July 9 | N/A |
| USTA Mixed 40 & Over | April 24 | May 24 | July 5 | July 12 ** | July 24-26 |
| CTA Mixed 18-39 (New League) | May 1 | May 24 | July 5 | July 12 ** | N/A |
| CTA Adult 18-39 | May 1 | June 1 | July 16 | August 6 | N/A |
| USTA Adult 40 & Over | May 1 | June 1 | July 16 | July 19 ** | August 14-16 * |
| CTA Women’s 2.5 (18 & Over) | May 1 | June 3 | July 15 | August 5 | N/A |
| USTA Adult 65 & Over | May 22 | June 23 | August 6 | August 18 | September 8-10 |
| CTA Women’s Summer Daytime | May 22 | June 23 | August 6 | August 27 | N/A |
| ITA Mixed | June 12 | July 12 | August 23 | August 31 | September 18-20 |
| CTA Twilight | June 12 | July 20 | September 3 | September 24 | N/A |
Calendar Notes
* USTA Adult 18 & Over / USTA Adult 40 & Over: Regular season winners and any wildcard teams advance to a single elimination Flight Playoff prior to Districts. Winners of the Flight Playoffs advance to Districts. See “All Deadlines and Important Dates” for more info.
** Score Entry Deadline – Identified that some players may have a District or Sectional Championship match scheduled on the same day.
USTA Colorado Flex League
| League | Registration Deadline | Season Starts | Season Ends | Score Entry Deadline | Flex Championships |
|---|---|---|---|---|---|
| USTA Colorado Flex League – Season 1 | January 25 | January 31 | March 14 | March 21 | N/A |
| USTA Colorado Flex League – Season 2 | March 15 | March 21 | May 2 | May 9 | July 11-25 |
| USTA Colorado Flex League – Season 3 | May 3 | May 9 | June 20 | June 27 | July 11-25 |
| USTA Colorado Flex League – Season 4 | July 5 | July 11 | August 22 | August 29 | October 17-November 7 |
| USTA Colorado Flex League – Season 5 | August 23 | August 29 | October 10 | October 12 | October 17-November 7 |
| USTA Colorado Flex League – Season 6 | October 11 | October 17 | December 5 | December 12 | N/A |
Deadlines and Important Dates by League
Trio
| Minimum Roster Deadline | Season Starts | Season Ends | Score Entry Deadline | District Championships |
| February 27 | March 21 | May 2 | May 23 | N/A |
| Registration Opens: | February 1 |
| USTA Colorado League Fee: | $22 (+$3.15 active.com fee) |
| Minimum Roster Deadline: | February 27 |
| Minimum # of Players on Roster: | 5 Players (75% In-Level Rule) |
| Match Schedules Available: | March 13 |
| Season Starts: | March 21 |
| Season Ends: | May 2 |
| Player Deletion Deadline: | May 3 |
| Score Entry Deadline: | May 23 |
| Trio League Details: | League Info |
USTA Mixed 18 & Over
| Minimum Roster Deadline | Season Starts | Season Ends | Score Entry Deadline | District Championships |
| March 6 | April 5 | May 17 | May 25 | June 5-7 |
| Registration Opens: | February 1 |
| USTA Colorado League Fee: | $33 (+$3.15 active.com fee) |
| Minimum Roster Deadline: | March 6 |
| Minimum # of Players on Roster: | 6 Players |
| Match Schedules Available: | March 27 |
| Season Starts: | April 5 |
| Season Ends: | May 17 |
| Player Deletion Deadline: | May 18 |
| Score Entry Deadline: | May 25 by 11:59pm |
| District Schedules Available: | May 29 by 6pm |
| District Championships: | June 5-7 |
| Sectional Championships: | More Info |
| National Championships: | More Info |
| USTA Mixed 18 & Over League Details: | League Info |
USTA Adult 18 & Over
| Minimum Roster Deadline | Season Starts | Season Ends | Score Entry Deadline | District Championships |
| March 13 | April 13 | May 28 | May 31 | June 19-21 |
| Registration Opens: | February 1 |
| USTA Colorado League Fee: | $33 (+$3.15 active.com fee) |
| Minimum Roster Deadline: | March 13 |
| Minimum # of Players on Roster: | 8 Players: NTRP 3.0 – 4.5 (75% In-Level Rule) 5 Players: NTRP 2.5, 5.0 5 Players: 5.0 & Above (non-advancing) |
| Match Schedules Available: | April 3 |
| Season Starts: | April 13 |
| Season Ends: | May 28 |
| Player Deletion Deadline: | May 29 |
| Score Entry Deadline: | May 31 by 11:59pm |
| Flight Playoff Schedules Available: | June 5 by 6pm |
| Flight Playoffs: | June 13 |
| Flight Playoff Match Times by Level: | 10am: M 3.0, M 3.5, M 4.0 1pm: W 2.5, W 3.0, W 4.0, W 5.0 3pm: W 3.5, W 4.5, M 4.5, M 5.0 |
| Flight Playoff Score Entry Deadline: | June 14 by 11:59pm |
| District Schedules Available: | June 15 by 6pm |
| District Championships: | June 19-21 |
| Sectional Championships: | More Info |
| National Championships: | More Info |
| USTA Adult 18 & Over League Details: | League Info |
USTA Adult 55 & Over
| Minimum Roster Deadline | Season Starts | Season Ends | Score Entry Deadline | District Championships |
| March 27 | April 29 | June 12 | June 22 | July 10-12 |
| Registration Opens: | March 1 |
| USTA Colorado League Fee: | $33 (+$3.15 active.com fee) |
| Minimum Roster Deadline: | March 27 |
| Minimum # of Players on Roster: | 6 Players |
| Match Schedules Available: | April 17 |
| Season Starts: | April 29 |
| Season Ends: | June 12 |
| Player Deletion Deadline: | June 13 |
| Score Entry Deadline: | June 22 by 11:59pm |
| District Schedules Available: | July 3 by 6pm |
| District Championships: | July 10-12 |
| Sectional Championships: | More Info |
| National Championships: | More Info |
| USTA Adult 55 & Over League Details: | League Info |
CTA Women’s Daytime Doubles
| Minimum Roster Deadline | Season Starts | Season Ends | Score Entry Deadline | District Championships |
| March 27 | May 5 | June 18 | July 9 | N/A |
| Registration Opens: | March 1 |
| USTA Colorado League Fee: | $33 (+$3.15 active.com fee) |
| Minimum Roster Deadline: | March 27 |
| Minimum # of Players on Roster: | 6 Players (75% In-Level Rule) |
| Match Schedules Available: | April 24 |
| Season Starts: | May 5 |
| Season Ends: | June 18 |
| Player Deletion Deadline: | June 19 |
| Score Entry Deadline: | July 9 |
| CTA Women’s Daytime Doubles League Details: | League Info |
USTA Mixed 40 & Over
| Minimum Roster Deadline | Season Starts | Season Ends | Score Entry Deadline | District Championships |
| April 24 | May 24 | July 5 | July 12** | July 24-26 |
| Registration Opens: | April 1 |
| USTA Colorado League Fee: | $33 (+$3.15 active.com fee) |
| Minimum Roster Deadline: | April 24 |
| Minimum # of Players on Roster: | 6 Players |
| Match Schedules Available: | May 15 |
| Season Starts: | May 24 |
| Season Ends: | July 5 |
| Player Deletion Deadline: | July 6 |
| Score Entry Deadline: | July 12** by 6pm |
| District Schedules Available: | July 17 |
| District Championships: | July 24-26 |
| Sectional Championships: | More Info |
| National Championships: | More Info |
| USTA Mixed 40 & Over League Details: | League Info |
CTA Mixed 18-39 (New League)
| Minimum Roster Deadline | Season Starts | Season Ends | Score Entry Deadline | District Championships |
| May 1 | May 24 | July 5 | July 12** | N/A |
| Registration Opens: | April 1 |
| USTA Colorado League Fee: | $33 (+$3.15 active.com fee) |
| Minimum Roster Deadline: | May 1 |
| Minimum # of Players on Roster: | 6 Players |
| Match Schedules Available: | May 15 |
| Season Starts: | May 24 |
| Season Ends: | July 5 |
| Player Deletion Deadline: | July 6 |
| Score Entry Deadline: | July 12** |
| CTA Mixed 18-39 League Details: | League Info |
CTA Adult 18-39
| Minimum Roster Deadline | Season Starts | Season Ends | Score Entry Deadline | District Championships |
| May 1 | June 1 | July 16 | August 6 | N/A |
| Registration Opens: | April 1 |
| USTA Colorado League Fee: | $33 (+$3.15 active.com fee) |
| Minimum Roster Deadline: | May 1 |
| Minimum # of Players on Roster: | 4 Players (75% In-Level Rule) |
| Match Schedules Available: | May 22 |
| Season Starts: | June 1 |
| Season Ends: | July 16 |
| Player Deletion Deadline: | July 17 |
| Score Entry Deadline: | August 6 |
| CTA Adult 18-39 League Details: | League Info |
USTA Adult 40 & Over
| Minimum Roster Deadline | Season Starts | Season Ends | Score Entry Deadline | District Championships |
| May 1 | June 1 | July 16 | July 19** | August 14-16 |
| Registration Opens: | April 1 |
| USTA Colorado League Fee: | $33 (+$3.15 active.com fee) |
| Minimum Roster Deadline: | May 1 |
| Minimum # of Players on Roster: | 9 Players: NTRP 3.0-4.5 (75% In-Level Rule) 3 Players: NTRP 5.0 (non-advancing) |
| Match Schedules Available: | May 22 |
| Season Starts: | June 1 |
| Season Ends: | July 16 |
| Player Deletion Deadline: | July 17 |
| Score Entry Deadline: | July 19** |
| Flight Playoff Schedules Available: | July 27 (By 6:00pm) |
| Flight Playoffs: | August 1 |
| Flight Playoff Match Times by Level: | 10am: M 3.0, M 3.5, M 4.0 1pm: W 3.0, W 4.0 3pm: W 3.5, W 4.5, M 4.5 |
| Flight Playoff Score Entry Deadline: | August 2 |
| District Schedules Available: | August 7 |
| District Championships: | August 14-16 |
| Sectional Championships: | More Info |
| National Championships: | More Info |
| USTA Adult 40 & Over League Details: | League Info |
CTA Women’s 2.5 (18 & Over)
| Minimum Roster Deadline | Season Starts | Season Ends | Score Entry Deadline | District Championships |
| May 1 | June 3 | July 15 | August 5 | N/A |
| Registration Opens: | April 1 |
| USTA Colorado League Fee: | $33 (+$3.15 active.com fee) |
| Minimum Roster Deadline: | May 1 |
| Minimum # of Players on Roster: | 5 Players |
| Match Schedules Available: | May 22 |
| Season Starts: | June 3 |
| Season Ends: | July 15 |
| Player Deletion Deadline: | July 17 |
| Score Entry Deadline: | August 5 |
| CTA Women’s 2.5 (18 & Over) League Details: | League Info |
USTA Adult 65 & Over
| Minimum Roster Deadline | Season Starts | Season Ends | Score Entry Deadline | District Championships |
| May 22 | June 23 | August 6 | August 18 | September 8-10 |
| Registration Opens: | May 1 |
| USTA Colorado League Fee: | $33 (+$3.15 active.com fee) |
| Minimum Roster Deadline: | May 22 |
| Minimum # of Players on Roster: | 6 Players |
| Match Schedules Available: | June 12 |
| Season Starts: | June 23 |
| Season Ends: | August 6 |
| Player Deletion Deadline: | August 7 |
| Score Entry Deadline: | August 18 |
| District Schedules Available: | September 1 |
| District Championships: | September 8-10 |
| Sectional Invitational: | More Info |
| National Invitational: | More Info |
| USTA Adult 65 & Over League Details: | League Info |
CTA Women’s Summer Daytime
| Minimum Roster Deadline | Season Starts | Season Ends | Score Entry Deadline | District Championships |
| May 22 | June 23 | August 6 | August 27 | N/A |
| Registration Opens: | May 1 |
| USTA Colorado League Fee: | $33 (+$3.15 active.com fee) |
| Minimum Roster Deadline: | May 22 |
| Minimum # of Players on Roster: | 5 Players (75% In-Level Rule) |
| Match Schedules Available: | June 12 |
| Season Starts: | June 23 |
| Season Ends: | August 6 |
| Player Deletion Deadline: | August 7 |
| Score Entry Deadline: | August 27 |
| CTA Women’s Summer Daytime League Details: | League Info |
ITA Mixed
| Minimum Roster Deadline | Season Starts | Season Ends | Score Entry Deadline | District Championships |
| June 12 | July 12 | August 23 | August 31 | September 18-20 |
| Registration Opens: | May 1 |
| USTA Colorado League Fee: | $33 (+$3.15 active.com fee) |
| Minimum Roster Deadline: | June 12 |
| Minimum # of Players on Roster: | 6 Players |
| Match Schedules Available: | July 3 |
| Season Starts: | July 12 |
| Season Ends: | August 23 |
| Player Deletion Deadline: | August 24 |
| Score Entry Deadline: | August 31 |
| District Schedules Available: | September 11 |
| District Championships: | September 18-20 |
| Sectional Championships: | More Info |
| ITA Mixed League Details: | League Info |
CTA Twilight
| Minimum Roster Deadline | Season Starts | Season Ends | Score Entry Deadline | District Championships |
| June 12 | July 20 | September 3 | September 24 | N/A |
| Registration Opens: | May 1 |
| USTA Colorado League Fee: | $33 (+$3.15 active.com fee) |
| Minimum Roster Deadline: | June 12 |
| Minimum # of Players on Roster: | 5 Players (75% In-Level Rule) |
| Match Schedules Available: | July 10 |
| Season Starts: | July 20 |
| Season Ends: | September 3 |
| Player Deletion Deadline: | September 4 |
| Score Entry Deadline: | September 24 |
| CTA Twilight League Details: | League Info |
USTA Flex
| Minimum Roster Deadline | Season Starts | Season Ends | Score Entry Deadline | Flex Championships |
| Season 1: January 25 | January 31 | March 14 | March 21 | N/A |
| Season 2: March 15 | March 21 | May 2 | May 9 | July 11-25 |
| Season 3: May 3 | May 9 | June 20 | June 27 | July 11-25 |
| Season 4: July 5 | July 11 | August 22 | August 29 | October 17-November 7 |
| Season 5: August 23 | August 29 | October 10 | October 12 | October 17-November 7 |
| Season 6: October 11 | October 17 | December 5 | December 12 | N/A |
| Registration Opens: | January 1 |
| USTA Colorado League Fee: | $16 |
| Minimum Roster Deadline: | Season 1: January 25 Season 2: March 15 Season 3: May 3 Season 4: July 5 Season 5: August 23 Season 6: October 11 |
| Match Schedules Available: | Season 1: January 30 Season 2: March 20 Season 3: May 8 Season 4: July 10 Season 5: August 28 Season 6: October 16 |
| Season Starts: | Season 1: January 31 Season 2: March 21 Season 3: May 9 Season 4: July 11 Season 5: August 29 Season 6: October 17 |
| Season Ends: | Season 1: March 14 Season 2: May 2 Season 3: June 20 Season 4: August 22 Season 5: October 10 Season 6: December 5 |
| Player Deletion Deadline: | Season 1: March 15 Season 2: May 3 Season 3: June 21 Season 4: August 23 Season 5: October 11 Season 6: December 6 |
| Score Entry Deadline: | Season 1: March 21 Season 2: May 9 Season 3: June 27 Season 4: August 29 Season 5: October 12 Season 6: December 12 |
| USTA Flex Championships Season 2 & 3 Winners: Championship #1 Season 4 & 5 Winners: Championship #2 | Season 1: N/A Season 2: July 11-July 25 Season 3: July 11-July 25 Season 4: October 17-November 7 Season 5: October 17-November 7 Season 6: N/A |
| USTA Flex League Details: | League Info |
Day of Week and Time of Day by NTRP Level
| League | Sunday | Monday | Tuesday | Wednesday | Thursday | Friday | Saturday |
|---|---|---|---|---|---|---|---|
| Trio | 1:00 PM W3.0, W4.0 3:00 PM W2.5, W3.5, W4.5 M 3.0, M3.5, M4.0, M4.5 | ||||||
| USTA Mixed 18 & Over | 12:00 PM 6.0, 8.0, 10.0 3:00 PM 7.0, 9.0 | ||||||
| USTA Adult 18 & Over | 6:00 PM W3.0, WOpen M3.0, MOpen | 6:00 PM W4.0, W4.5 M3.5 | 6:00 PM W2.5, W5.0 M4.0 | 6:00 PM W3.5 M4.5, M5.0 | |||
| USTA Adult 55 & Over | 9:00 AM W7.0, W9.0 M6.0, M9.0 | 9:00 AM W6.0 M7.0 | 9:00 AM W8.0 M8.0 | ||||
| CTA Women’s Daytime Doubles | 9:00 AM W2.5, W3.5 | 9:00 AM W3.0 | 9:00 AM W4.0, W4.5 | ||||
| USTA Mixed 40 & Over | 12:00 PM 6.0, 8.0 3:00 PM 7.0, 9.0 | ||||||
| CTA Mixed 18-39 (New League) | 12:00 PM 6.0, 8.0, 10.0 3:00 PM 7.0, 9.0 | ||||||
| USTA Adult 40 & Over | 6:00 PM W3.0 M3.0 | 6:00 PM W4.0, W4.5 M3.5 | 6:00 PM M4.0 | 6:00 PM W3.5 M4.5 | |||
| CTA Adult 18-39 | 6:00 PM W3.0 M3.0 | 6:00 PM W4.0, W4.5 M3.5 | 6:00 PM M4.0 | 6:00 PM W3.5 M4.5 | |||
| CTA Women’s 2.5 (18 & Over) | 6:00 PM W2.5 | ||||||
| CTA Women’s Summer Daytime | 9:00 AM W2.5, W3.5 | 9:00 AM W3.0 | 9:00 AM W4.0, W4.5 | ||||
| USTA Adult 65 & Over | 9:00 AM W9.0 M8.0 | 9:00 AM W7.0, W8.0 M6.0, M9.0 | 9:00 AM W6.0 M7.0 | ||||
| ITA Mixed | 12:00 PM 6.5, 8.5 3:00 PM 5.5, 7.5, 9.5 | ||||||
| CTA Twilight | 6:00 PM W3.0 M3.0 | 6:00 PM W4.0, W4.5 M3.5 | 6:00 PM W2.5, W5.0 M4.0 | 6:00 PM W3.5 M4.5, M5.0 |
USTA Flex League Calendar
USTA Colorado Flex League
| League | Registration Deadline | Season Starts | Season Ends | Score Entry Deadline | Flex Championships |
|---|---|---|---|---|---|
| USTA Colorado Flex League – Season 1 | January 25 | January 31 | March 14 | March 21 | N/A |
| USTA Colorado Flex League – Season 2 | March 15 | March 21 | May 2 | May 9 | July 11-25 |
| USTA Colorado Flex League – Season 3 | May 3 | May 9 | June 20 | June 27 | July 11-25 |
| USTA Colorado Flex League – Season 4 | July 5 | July 11 | August 22 | August 29 | October 17-November 7 |
| USTA Colorado Flex League – Season 5 | August 23 | August 29 | October 10 | October 12 | October 17-November 7 |
| USTA Colorado Flex League – Season 6 | October 11 | October 17 | December 5 | December 12 | N/A |