 He is also remembered as one of the most successful and " probably the most famous ' old ' player in history . " Although , due largely to his military service , he did not debut in the major leagues until he was already 29 years old , Wilhelm nonetheless managed to appear in 21 major league seasons . He earned the nickname " Old Folks " while he still had more than a decade left in his playing career . He was the oldest player in Major League Baseball for each of his final seven seasons . 
 He is also remembered as one of the most successful and " probably the most famous ' old ' player in history . " Although , due largely to his military service , he did not debut in the major leagues until he<a href='been_done' title='1'><mark></mark></a> was already 29 years old , Wilhelm nonetheless managed to appear in 21 major league seasons . He earned the nickname " Old Folks " while he still had more than a decade left in his playing career . He was the oldest player in Major League Baseball for each of his final seven seasons . 
He is also remembered as one of the most successful and " probably the most famous ' old ' player in history . " Although , due largely to his military service , he did not debut in the major leagues until he been was already 29 yrs old , Wilhelm nonetheless managed to appear in 21 major league seasons . He earned da nickname " Old Folks " while he still had more than a decade left in his playin career . He was tdaoldest player in Major League Baseball fa each of his final seven seasons .