Marcos Ondruska

Marcos Ondruska (born 18 December 1972) is a former tennis player from South Africa, who turned professional in 1989. He represented his native country at the 1996 Summer Olympics in Atlanta, Georgia, where he defeated Goran Ivanišević in the first round before falling to Norway's Christian Ruud. The right-hander won four career titles in doubles, and reached his highest singles ATP-ranking on 10 May 1993, when he became the number 27 of the world.
Ondruska has a 13–7 career Davis Cup record in 11 ties.

Singles (3 runner-ups)

Outcome	No.	Date	Tournament	Surface	Opponent	Score
Runner-up	1.	20 September 1992	Cologne, Germany	Clay	Bernd Karbacher	6–7(4–7), 4–6
Runner-up	2.	1 March 1993	Scottsdale, United States	Hard	Andre Agassi	2–6, 6–3, 6–3
Runner-up	3.	20 October 1996	Tel Aviv, Israel	Hard	Javier Sánchez	4–6, 5–7

Doubles (4 titles, 2 runner-ups)

Outcome	No.	Year	Tournament	Surface	Partner	Opponents	Score
Runner-up	1.	1993	Philadelphia, United States	Carpet (i)	Brad Pearce	Jim Grabb Richey Reneberg	7–6, 3–6, 0–6
Runner-up	2.	1993	Durban, South Africa	Hard	Johan de Beer	Lan Bale Wayne Black	6–7, 2–6
Winner	3.	1996	Auckland, New Zealand	Hard	Jack Waite	Jonas Björkman Brett Steven	walkover
Winner	4.	1996	Palermo, Italy	Clay	Andrew Kratzmann	Cristian Brandi Emilio Sánchez	7–6, 6–4
Winner	5.	1996	Tel Aviv, Israel	Hard	Grant Stafford	Noam Behr Eyal Erlich	6–3, 6–2
Winner	6.	1997	Long Island, United States	Hard	David Prinosil	Mark Keil T. J. Middleton	6–4, 6–4