| Match History (2023) | View Advanced Player Stats |
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William Koster (Texas City, TX)
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| Match Date | Match | Team | Court | Partner | Opponent(s) | W/L | Result | Match | TTR |
| 10/24/2023 | Tournament M65s |
Level 1: Men's 60 & Crabel Capital Men’s $10,000 65’s Clay Court Championships | 32 | Michael Tammen | L | 6-0 6-1 |
NC | NC | |
| 10/23/2023 | Tournament M65s |
Level 1: Men's 60 & Crabel Capital Men’s $10,000 65’s Clay Court Championships | 64 | Charles Kaplan | W | 6-4 3-0 |
NC | NC | |
| 10/08/2023 | Tournament M65s |
HTA Fall Festival SS and Sr | F | Jay Pfister | W | 7-5 6-2 |
NC | NC | |
| 10/07/2023 | Tournament M65s |
HTA Fall Festival SS and Sr | S | Melvin McCurley | W | 6-0 6-0 |
NC | NC | |
| 10/06/2023 | Tournament M65s |
HTA Fall Festival SS and Sr | Q | Bob Pattan | W | 6-1 6-1 |
NC | NC | |
| 05/27/2023 | Tournament M65s |
Westwood Senior Championships | Q | Leonidas Oyaga | L | 6-3 6-2 |
NC | NC | |
| 05/26/2023 | Tournament M65s |
Westwood Senior Championships | 16 | James Cryan | W | 6-4 6-3 |
NC | NC | |
| 04/21/2023 | Tournament M65s |
HARRY V. BARTON BOCAGE CLAY COURT CHAMPIONSHIPS | C-16 | Bill Bodie | L | Def | ----- | ----- | |
| 04/20/2023 | Tournament M65s |
HARRY V. BARTON BOCAGE CLAY COURT CHAMPIONSHIPS | C-32 | Jay Pfister | W | 6-1 6-1 |
NC | NC | |
| 04/19/2023 | Tournament M65s |
HARRY V. BARTON BOCAGE CLAY COURT CHAMPIONSHIPS | 64 | Kerry Clapper | L | 6-4 6-1 |
NC | NC | |
| 04/09/2023 | Tournament M65s |
HTA/RBC Wealth Management Houston Open | Adult, Sr & Super Sr | F | Doug Stursma | W | 7-6 6-3 |
NC | NC | |
| 04/09/2023 | Tournament M65s |
HTA/RBC Wealth Management Houston Open | Adult, Sr & Super Sr | S | David Brooks | W | 6-2 6-0 |
NC | NC | |
| 04/08/2023 | Tournament M65s |
HTA/RBC Wealth Management Houston Open | Adult, Sr & Super Sr | Q | Henry Ansah | W | 6-0 6-0 |
NC | NC | |
| 03/12/2023 | Tournament M65s |
2023 MABRY Sr/SS Major Zone | F | Peter Markes | L | 6-2 6-1 |
NC | NC | |
| 03/11/2023 | Tournament M65s |
2023 MABRY Sr/SS Major Zone | S | Gustavo Gus Alaniz | W | 6-1 6-0 |
NC | NC | |
| 03/10/2023 | Tournament M65s |
2023 MABRY Sr/SS Major Zone | Q | Mark Hawkins | W | 6-1 6-1 |
NC | NC |
| Level 1: Men's 60 & Crabel Capital Men’s $10,000 65’s Clay Court Championships | ||
| 10/24/2023 | 32 | Tournament M65s |
| L | ||
| 6-0 6-1 |
Michael Tammen | |
| Match: NC | TTR: NC | |
| Level 1: Men's 60 & Crabel Capital Men’s $10,000 65’s Clay Court Championships | ||
| 10/23/2023 | 64 | Tournament M65s |
| W | ||
| 6-4 3-0 |
Charles Kaplan | |
| Match: NC | TTR: NC | |
| HTA Fall Festival SS and Sr | ||
| 10/08/2023 | F | Tournament M65s |
| W | ||
| 7-5 6-2 |
Jay Pfister | |
| Match: NC | TTR: NC | |
| HTA Fall Festival SS and Sr | ||
| 10/07/2023 | S | Tournament M65s |
| W | ||
| 6-0 6-0 |
Melvin McCurley | |
| Match: NC | TTR: NC | |
| HTA Fall Festival SS and Sr | ||
| 10/06/2023 | Q | Tournament M65s |
| W | ||
| 6-1 6-1 |
Bob Pattan | |
| Match: NC | TTR: NC | |
| Westwood Senior Championships | ||
| 05/27/2023 | Q | Tournament M65s |
| L | ||
| 6-3 6-2 |
Leonidas Oyaga | |
| Match: NC | TTR: NC | |
| Westwood Senior Championships | ||
| 05/26/2023 | 16 | Tournament M65s |
| W | ||
| 6-4 6-3 |
James Cryan | |
| Match: NC | TTR: NC | |
| HARRY V. BARTON BOCAGE CLAY COURT CHAMPIONSHIPS | ||
| 04/21/2023 | C-16 | Tournament M65s |
| L | ||
| Def | Bill Bodie | |
| Match: ----- | TTR: ----- | |
| HARRY V. BARTON BOCAGE CLAY COURT CHAMPIONSHIPS | ||
| 04/20/2023 | C-32 | Tournament M65s |
| W | ||
| 6-1 6-1 |
Jay Pfister | |
| Match: NC | TTR: NC | |
| HARRY V. BARTON BOCAGE CLAY COURT CHAMPIONSHIPS | ||
| 04/19/2023 | 64 | Tournament M65s |
| L | ||
| 6-4 6-1 |
Kerry Clapper | |
| Match: NC | TTR: NC | |
| HTA/RBC Wealth Management Houston Open | Adult, Sr & Super Sr | ||
| 04/09/2023 | F | Tournament M65s |
| W | ||
| 7-6 6-3 |
Doug Stursma | |
| Match: NC | TTR: NC | |
| HTA/RBC Wealth Management Houston Open | Adult, Sr & Super Sr | ||
| 04/09/2023 | S | Tournament M65s |
| W | ||
| 6-2 6-0 |
David Brooks | |
| Match: NC | TTR: NC | |
| HTA/RBC Wealth Management Houston Open | Adult, Sr & Super Sr | ||
| 04/08/2023 | Q | Tournament M65s |
| W | ||
| 6-0 6-0 |
Henry Ansah | |
| Match: NC | TTR: NC | |
| 2023 MABRY Sr/SS Major Zone | ||
| 03/12/2023 | F | Tournament M65s |
| L | ||
| 6-2 6-1 |
Peter Markes | |
| Match: NC | TTR: NC | |
| 2023 MABRY Sr/SS Major Zone | ||
| 03/11/2023 | S | Tournament M65s |
| W | ||
| 6-1 6-0 |
Gustavo Gus Alaniz | |
| Match: NC | TTR: NC | |
| 2023 MABRY Sr/SS Major Zone | ||
| 03/10/2023 | Q | Tournament M65s |
| W | ||
| 6-1 6-1 |
Mark Hawkins | |
| Match: NC | TTR: NC | |
| Glossary |
| Match | Player TTR for individual match. |
| TTR | TTR after completed match. |
| NC | Match not calculated into TTR yet. |
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