 After starting the first half of the season going 7–4 with a 2.81 ERA in 17 starts, Jimenez had a disappointing second half, as he pitched to a 5.63 ERA with a 5–6 record after the All-Star break.He finished the 2015 season with a moderate 4.11 ERA in 32 starts.He went 12–10 with a 1.32 WHIP and 168 strikeouts in 184 innings pitched.