Quintana (4-4) gave up six runs (five earned) on 12 hits and one walk while striking out two through 5.1 innings to take the loss against the Reds on Sunday.
Quintana was knocked around, breaking an impressive streak of eight outings in which he had allowed three or fewer runs. The left-hander has a 3.73 ERA through 10 starts this season and will make his next start Saturday against the Cardinals.