10: Collin McHugh, 2014
McHugh’s first year with the Astros was arguably his best. He made 25 starts and posted an 11-9 record and 2.73 ERA. He struck out more than a batter per inning and posted a low WHIP of 1.022, establishing himself as a solid starter for the soon-to-be-contending club.
9: Carlos Correa, 2017
Correa could be higher on this list if he could have stayed healthy over the last three years. But his abbreviated 2017 was still excellent as he made the All-Star team and hit .315/.391/.550 with a career-best 24 homers in 109 games. He was worth 4.5 WAR in that shortened season.
8: Marwin Gonzalez, 2017
He was indescribably useful for the Astros, but not more so than in his breakout 2017 in which he hit .303/.377/.530 with 23 homers and 90 RBIs. He garnered some MVP consideration and was worth 4.1 WAR and posted a 156 OPS+ playing as the team’s Swiss-Army knife.
7: George Springer, 2019
Springer played in only 122 games but set career-highs in home runs (39), RBIs (96), WAR (6.2), batting average (.292), OPS (.974) and OPS+ (150). He earned his third All-Star selection and finished seventh in the MVP voting.
6: Will Harris, 2019
Seasons by relievers are sometimes difficult to value against those of players who play every day or throw 200 innings. But Harris’ 2019 was outstanding as he was worth 2.1 WAR, posting a 1.50 ERA in 68 appearances with a ridiculous 309 ERA+, meaning he was 209 percent better than league average. Even in just 60 innings, that’s worth a lot.