Arizona has gone 23-22 in road games and 46-47 overall. Diamondbacks hitters have a collective .328 on-base percentage, the third-ranked percentage in the NL. The matchup Thursday is the seventh time these teams match up this season. The Diamondbacks hold a 4-2 advantage in the season series.

Whatever calf problem Merrill Kelly was dealing with in the seventh inning here against the Padres on Tuesday, July 8, it wasn't a factor in the one pitch the Diamondbacks right-hander wished he could have back.