Arizona has dropped two straight but prior to that had won 10 of 12, and the offense is hitting, scoring six-plus runs in six of the last nine games. The Pirates’ bats have cooled a bit, scoring 8 in a win over the Cubs on Sunday but had two runs over the prior three games. Mitch Keller vs. Merrill Kelly look similar overall, but look closer. Kelly in July is 3-0 with a 2.45 ERA and he’s been far better on the road this season. Keller in July is 0-2 with a 5.14 ERA and he’s been far worse at home.