Simplify the following text for a Grade 9 native English-speaking person.
Original: In addition to wins , Young still holds the Major League records for most career innings pitched ( 7,355 ) , most career games started ( 815 ) , and most complete games ( 749 ) .
Simplified: In addition to wins , Young holds the MLB records for most career innings pitched ( 7,355 ) , most career games started ( 815 ) , and most complete games ( 749 ) .