Tyler Anderson is 1-1 with a 3.45 ERA this season but he is coming off a complete game where he only gave up one unearned run against the Dbacks. He is 3-1 with a 5.32 ERA in 10 career appearances against the Dbacks. Zac Gallen is 0-0 with a 2.25 ERA and he only gave up one run in six innings in his last start against the Giants. He has thrown five straight quality starts, but the Dbacks have the third lowest OPS in the league against lefties at .603. The Dbacks have lost eight straight games, they should not be this heavy of a favorite against a division opponent.