Arrieta finished off the month of July with games against the Dodgers and Red Sox. On July 25, he was home to face the Dodgers. He pitched through 6 innings, allowing just 3 runs (2 earned, 1 home run) on 5 hits. He also walked 2 and struck out 6. The Phillies won 7-3.
On July 31, the Phillies were in Boston to play the Red Sox. He pitched 7 innings—his third time pitching 7 in the month of July. he allowed 1 run on 6 hits, while striking out 7 and not walking a batter.