Here is the list of PGA Tour tournaments won by Mark O'Meara, in chronological order:
1984
Greater Milwaukee Open
1985
Bing Crosby National Pro-Am
Hawaiian Open
1989
AT&T Pebble Beach National Pro-Am
1990
AT&T Pebble Beach National Pro-Am
H.E.B. Texas Open
1991
Walt Disney World/Oldsmobile Classic
1992
AT&T Pebble Beach National Pro-Am
1995
Honda Classic
Bell Canadian Open
1996
Mercedes Championships
Greater Greensboro Chrysler Classic
1997
AT&T Pebble Beach National Pro-Am
Buick Invitational
1998
Masters Tournament
British Open Championship



