Table:
text: Mark McCumber
PGA Tour wins (10)
PGA Tour wins (10)
Date_ Tournament Winning_score Margin_of_victory Runner_up
Mar 18, 1979 Doral-Eastern Open –9 (67-71-69-72=279) 1 stroke Bill Rogers
Jul 3, 1983 Western Open –4 (74-71-68-71=284) 1 stroke Tom Watson
Oct 30, 1983 Pensacola Open –18 (68-68-65-65=266) 4 strokes Lon Hinkle
Feb 24, 1985 Doral-Eastern Open –4 (70-71-72-71=284) 1 stroke Tom Kite
Jul 12, 1987 Anheuser-Busch Golf Classic –17 (65-69-67-66=267) 1 stroke Bobby Clampett
Mar 27, 1988 The Players Championship –15 (65-72-67-69=273) 4 strokes Mike Reid
Jul 3, 1989 Beatrice Western Open –13 (68-67-71-69=275) Playoff Peter Jacobsen
Jul 10, 1994 Anheuser-Busch Golf Classic –17 (67-69-65-66=267) 3 strokes Glen Day

Question: What was Mark McCumber's PGA Tour wins (10) margin on March 18, 1979?