6. Best/worst after win No. 200
Remember how Marichal’s record fell off after winning No. 200? That brings up some questions. Who did the best/worst after winning 200? Who had the biggest fall off? Did anyone actually get better in terms of winning percentage?
Let’s limit this to people with more than 50 decisions after their 200th win, or else the answer will be someone like Charlie Root, who went 1-0 between his 200th win and retirement.
Among those guys, the best winning percentage belongs to Roger Clemens, who went 154-73 (.678) after his 200th win. Prior to that he won only at a .643 clip. (Pause for people to mutter a steroids-related comment.) Yeah, but he also had much better run support later in his career, too.
Next-best winning percentage after joining the club: Red Ruffing. Huh. Ruffing is a guy who lost 90 games before winning 40. Pitching for terrible Red Sox teams, Ruffing had an even worse winning record. Then he went to terrific Yankee teams and had an even better winning percentage. Weird.
Plus Ruffing also aged really well. He went from 200-184 (.521) to 73-41 (.640) in his final years. And yes, that’s the biggest improvement in winning percentage for anyone with at least 50 decisions after the 200th win.