Colorado Rockies: What are the 25 best seasons by Rockies aged 25 or under?

19) Tyler Chatwood’s 2013 season (Age 23 season)

After a rough first season in Colorado, Tyler Chatwood did very well in his second season as a Rockie. He made 20 starts, going 8-5 with an ERA of 3.15, a FIP of 3.66, and an ERA+ of 142. His strikeout rate dropped a bit from his 2012 season (5.7 to 5.3) but he dropped his walk rate significantly from 4.6 to 3.3 per nine innings.

He only ranks 19th on our list because he only made 20 starts since he missed some time due to injury, as he did for nearly every season he was with the Rockies.

18) Jhoulys Chacin’s 2011 season (Age 23 season)

Jhoulys Chacin was one of the first pitchers that seemingly figured out Coors Field and was able to pitch well in numerous seasons with the Rockies. However, the Rockies weren’t very good when he was with the team and they rarely gave him any run support whatsoever.

That was definitely shown in 2011 when he had a record of 11-14 but his ERA was only 3.62. In 194 innings (31 starts), he had an ERA+ of 126, a FIP of 4.23, and a WAR of 4.1.

He averaged 7.8 hits, 0.9 home runs, 4.0 walks, and 7.0 strikeouts per nine innings. Opposing batters only hit .231/.315/.392 and they fared even worse against him in the first half of the season as, before the All-Star break, opponents only hit .201/.287/.365 with an ERA of 3.16.

In 2011, he actually pitched better at Coors Field as he was 6-7 with a 3.57 ERA in 18 starts there while he was 5-7 with a 3.68 ERA in 13 starts on the road.