H2H data updated: 2026-07-18 17:48 UTC
Doug Flach vs Lars Koslowski H2H: 1-0
Doug Flach holds a 1–0 lead over Lars Koslowski in their ATP head-to-head. Across 1 main-draw meeting, Doug Flach leads 1–0 on hard courts. Most recently, Doug Flach won the 1993 Tokyo Outdoor second round 7-5 6-1.
Want to explore more matchups? Advanced rivalry search lets you browse current and historical rivalries, unbeaten records, or every matchup for a player.
USA
Age 55
Right-Handed
183 cm / 6'0"
H2H
1
–
0
1 main draw meetings
GER
Age 55
Right-Handed
188 cm / 6'2"
H2H Match Log
| Date | Tournament | Category | Round | Surface | Winner | Score | Loser | Match |
|---|---|---|---|---|---|---|---|---|
| Apr 7, 1993* | Tokyo Outdoor | ATP 250 | R64 | Hard | Doug Flach | 7-5 6-1 | Lars Koslowski | Match data |
* Estimated match date where the exact historical date is unavailable.
Career Comparison
| Player | Current | Peak | Pts | Elo | W | L | Win % | GS | 1000 | Finals | 500 | 250 | Titles |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doug Flach | #788 | #108 | 415 | 1,629 | 28 | 46 | 37.8% | 0 | 0 | 0 | 0 | 0 | 0 |
| Lars Koslowski | #1,378 | #63 | 576 | 1,658 | 17 | 28 | 37.8% | 0 | 0 | 0 | 0 | 0 | 0 |
Career Progression by Age
Seasons are aligned by the age each player spent most of that calendar year. GS and Titles are cumulative career totals through that season.
| Age | Doug Flach | Lars Koslowski | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 17 | 1988 | 1–1 | 50.0% | #577 | 1,517 | 0 | 0 | — | — | — | — | — | — | — |
| 18 | — | — | — | — | — | — | — | 1989 | 1–1 | 50.0% | #520 | 1,512 | 0 | 0 |
| 20 | — | — | — | — | — | — | — | 1991 | 4–2 | 66.7% | #89 | 1,589 | 0 | 0 |
| 21 | — | — | — | — | — | — | — | 1992 | 10–20 | 33.3% | #116 | 1,520 | 0 | 0 |
| 22 | 1993 | 6–8 | 42.9% | #123 | 1,569 | 0 | 0 | 1993 | 2–5 | 28.6% | #252 | 1,511 | 0 | 0 |
| 23 | 1994 | 4–17 | 19.0% | #215 | 1,472 | 0 | 0 | — | — | — | — | — | — | — |
| 24 | 1995 | 0–1 | 0.0% | #648 | 1,461 | 0 | 0 | — | — | — | — | — | — | — |
| 25 | 1996 | 3–2 | 60.0% | #146 | 1,540 | 0 | 0 | — | — | — | — | — | — | — |
| 26 | 1997 | 11–14 | 44.0% | #174 | 1,573 | 0 | 0 | — | — | — | — | — | — | — |
| 27 | 1998 | 3–3 | 50.0% | #215 | 1,609 | 0 | 0 | — | — | — | — | — | — | — |