Donny Isaak (born June 10, 1969) is an American former professional tennis player.
Isaak, a native of Carroll, Iowa, played collegiate tennis for the University of Southern California. He was a member of USC's 1991 NCAA championship team, as well as an NCAA singles semi-finalist and All-American that year.[1]
In the early 1990s he competed on the professional tour and reached a best singles world ranking of 288. He made a doubles main draw appearance at Indian Wells in 1991, partnering Swede David Ekerot.[2]
ATP Challenger finals
Doubles: 2 (0–2)
| Result | No. | Date | Tournament | Surface | Partner | Opponents | Score |
|---|---|---|---|---|---|---|---|
| Loss | 1. | Sep 1992 | Azores, Portugal | Hard |  Peter Nyborg
|
Henrik Holm Nicklas Utgren
|
6–7, 6–7 |
| Loss | 2. | Jul 1994 | Aptos, United States | Hard |  Michael Roberts
|
Brian MacPhie Alex O'Brien
|
2–6, 6–7 |
References
- ^ "USC's Isaak Reaches Today's Semifinals". Los Angeles Times. May 25, 1991.
- ^ "Indian Wells 1991 Tennis Tournament". itftennis.com.
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