Ryan Cook ERA in 2015
18.692015 Regular Season
Ryan Cook posted an 18.69 ERA in the 2015 regular season.
- Ryan Cook's highest ERA of the 6 seasons on file; the best is 2.09 in 2012.
- Up 15.27 from 3.42 in 2014.
Figures come from ESPN's box scores and were last read on October 28, 2026.
