Be nice. 

Thanks for your improvement to Roger Clemens. It's a good idea, though, to try to be calm and civil in your edit summaries. Saying, "Are you serious? Learn up stats, rather than throwing in random numbers" seems to go against Wikipedia:Assume good faith.

Whoever made that mistake might feel insulted.

It's possible, for instance, that those were his 2005 stats and the person accidentally typed 2006 instead of 2005. Or 2007 or any recent year, like that.