Aside from being the just the tenth player to return to a former team after a 15-year gap, he is among the "leaders" in career wins for a pitchers who never won more than 17 in a season:

Yeah, that's a nutty set of criteria, but that's a great list of B-list pitching stars.

If that's not enough, here are the pitchers who won at least twenty games in a season and won the fewest games overall for their careers:

Schmidt played one season and quit the Brooklyn Dodgers and the majors in general to return to the west coast and the PCL. Maybe he was right: The Dodgers followed him some fifty years later.

Fette was one of two 30-year-old rookies who won 20 games for the 1937 Braves nee Bees, Jim Turner being the other. Beazley won 21 for the Cardinals in 1942 and then two more in the Series to beat the Yankees. He would injure himself doing exhibitions during World War II and win just 9 more.

Johan Santana was actually on the list (43-18) prior to the season. He isn't anymore.