Barry Bonds holds the record for career home runs with 762 and the mark for most homers in a season with 73.
As of June 2014 Barry Bonds holds the record for most regular season homeruns. The record is 73 which beat Mark McGwire's record.
Barry Bonds has the most homeruns in a single season. His record is 73.
Barry Bonds holds the record with 762 home runs.
Nolan Ryan holds the record with 2,795 career walks allowed (he also holds the record for career strikeouts).
Cy Young.511 wins 316 losses.who holds the record for most wins and most losses.