Breaking down the wins
Greinke’s career currently features 205 wins, second among all active pitchers to—you guessed it—Justin Verlander. Leading the majors, Verlander possesses 225 wins, exactly 20 more victories than his teammate.
Both pitchers feature dominant win-loss percentages above .620 in the regular season. For example, over the course of their respective careers, Greinke sits at 82 games above .500, and Verlander 96 games.
Last season, Verlander won 21 games, while Greinke won 18 as a starting pitcher for both the Diamondbacks and the Astros. Assuming both starters do not earn 20 wins in a future season—not to say they cannot—averaging 15 wins per year serves as a lofty, but attainable goal for both players.
Over Greinke’s last five seasons, the Florida native has averaged slightly more than 16 wins per season. And in Verlander’s last five seasons, the Astros number one pitcher has averaged slightly less than 15—a number negatively skewed by a 2015 campaign in which he won only five games.