Denis O'Sullivan (golfer)

O'Sullivan won the 1985 Irish Amateur Close and the 1990 Irish Amateur Stroke Play, but did not turn professional until 1997, when he decided to try to qualify for the European Seniors Tour. He came through the European Seniors Tour Qualifying School at his first attempt and became one of the tour's most consistent players. He has won six seniors events and finished in the top ten on the Order of Merit several times, with a best ranking of third in 2000.

• 1985 Irish Amateur Close
• 1990 Irish Amateur Stroke Play

No.	Date	Tournament	Winning score	Margin of victory	Runner(s)-up
1	22 Oct 2000	Dan Technology Senior Tournament of Champions	−11 (70-69-66=205)	1 stroke	Maurice Bembridge, Nick Job, Ross Metherell
2	28 Oct 2000	Abu Dhabi European Seniors Tour Championship	−14 (66-71-65=202)	1 stroke	Priscillo Diniz
3	24 Jun 2001	Palmerston Trophy Berlin	−4 (71-72-69=212)	4 strokes	Seiji Ebihara, Eddie Polland
4	15 Jul 2001	STC Scandinavian International	−8 (73-67-65=205)	1 stroke	Maurice Bembridge
5	19 Oct 2002	Tunisian Seniors Open	−14 (68-66-68=202)	2 strokes	John Morgan
6	4 Mar 2005	DGM Barbados Open	−10 (68-68-70=206)	3 strokes	John Grace

European Seniors Tour playoff record (0–1)

No.	Year	Tournament	Opponent	Result
1	2002	Bad Ragaz PGA Seniors Open	Dragon Taki	Lost to par on third extra hole

Amateur

• European Amateur Team Championship (representing Ireland): 1977

Professional

• Praia d'El Rey European Cup: 1998 (tie)

• List of golfers with most European Senior Tour wins

• Denis O'Sullivan at the European Tour official site