Site data updated: 2026-05-28 18:14 UTC
Donald Young def. Stefan Kozlov
4-6 6-4 6-4
Match Information
| Date | Jan 7, 2021* |
|---|---|
| Tournament | Delray Beach |
| Category | ATP 250 |
| Surface | Hard |
| Round | Q2 |
| Winner | Donald Young |
| Score | 4-6 6-4 6-4 |
| Loser | Stefan Kozlov |
| Duration | 2h 25m |
| Stat | Donald Young | Stefan Kozlov |
|---|---|---|
| Aces | 1 | 1 |
| Double faults | 10 | 6 |
| First serve % | 58 | 66 |
| First serve points won % | 62 | 68 |
| Second serve points won % | 49 | 34 |
| Break points saved % | 62 | 45 |
| Break points converted % | 55 | 38 |
| Service points won % | 56 | 57 |
| Return points won % | 43 | 44 |
| Total points won % | 51 | 49 |
Pre-match Comparison
| Field | Donald Young | Stefan Kozlov |
|---|---|---|
| Country | USA | USA |
| Birth date | Jul 23, 1989 | Feb 1, 1998 |
| Age | 31 | 22 |
| Height | 183 | 183 |
| Handedness | Left-Handed | Right-Handed |
| Backhand style | Two-Handed Backhand | — |
| Ranking (entering) | 327 | 374 |
| Ranking points (entering) | 135 | 110 |
| Elo (entering) | 1,640 | 1,527 |
| Career W-L | 125–187 | 9–26 |
| Career earnings | $4,694,661 | $1,121,946 |
Path
Donald Young's path
| Date | Round | Opponent | Score | W/L | H2H | Match data |
|---|---|---|---|---|---|---|
| Jan 7, 2021 | Q1 | Pedro Sakamoto | 3-6 6-4 6-2 | W | H2H | Match data |
Donald Young's next match
| Date | Round | Opponent | Score | W/L | H2H | Match data |
|---|---|---|---|---|---|---|
| Jan 10, 2021 | R32 | Frances Tiafoe | 3-6 4-6 | L | H2H | Match data |
Stefan Kozlov's path
| Date | Round | Opponent | Score | W/L | H2H | Match data |
|---|---|---|---|---|---|---|
| Jan 7, 2021 | Q1 | Johannes Haerteis | 5-0 (ret.) | W | H2H | Match data |