Iwakuma allowed one run on five hits over 6 1/3 innings as he improved to 16-11 with a 3.87 ERA. Relievers Tom Wilhelmsen, Steve Cishek and Edwin Diaz closed out the win by retiring the last seven batters in order, with the 22-year-old Diaz collecting his 16th save in 17 chances.
Angels starter Jhoulys Chacin pitched well as a late replacement for sore-armed Tyler Skaggs, throwing six innings of one-run ball on three hits with no walks and five strikeouts. Chacin turned a 1-1 tie over to his bullpen, but reliever Jose Valdez immediately gave up a home run to Cruz leading off the seventh.