Indians pitcher Justin Masterson (13-9) tossed a quality start but was not backed by enough run support as he took the loss Friday night against the Athletics. The right-hander allowed three runs on seven hits and one walk while striking out four over 7 2/3 innings of a 3-2 defeat.

Masterson has allowed 12 earned runs combined over his last three starts (19 innings). He is scheduled to make his next start Wednesday against the Angels in Los Angeles. He gave up five runs -- four earned -- over 4 1/3 innings pitched in his previous meeting against the Angels on Aug. 11.