Comments on: Winningest and Losingest Players This and that about baseball stats. Tue, 16 Jul 2013 17:01:55 +0000 hourly 1 By: DoubleDiamond Fri, 02 Oct 2009 23:06:25 +0000 I've read before that Pete Rose has the record for being on the winning team for the most games, so someone has already done this research. But maybe not as quickly as a modern database can do it. I don't know, however, if this only includes games in which he appeared or also includes games for which he was an active player but didn't get in the game. In his career, though, there weren't that many of those games.