50 Year Old Driver Wins Updated
(I use the season in which the driver turned 50yrs, not by birthdate.)

Cup: HGant-8, MMartin-5, BAllison-2, Morgan Shepherd-1
Mark Martin is now the 16th driver in Cup history to have 40+Wins.
Those 16 drivers are 9.04% of the 177 dif drivers to win a Cup race.
Those 16 drivers won 1145 of the 2237 races run = 51.18%.

Ron Hornaday-12 Trucks:'09-6,'08-6.
Herschel McGriff-11 CWWest:'89-'83
Mike Skinner-8 Trucks:'09-2,'08-1,'07-5.
Ken Schrader-5 CWWest:'06-1W, ARCA:'07-'05-4W.
Ted Musgrave-1 Trucks:'07-1W.
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Crusader-0W