"We know we have a good team and we still have a lot to prove," Santana said. "We still have a long way to go, and I think a lot of people still have a lot of things to prove here as a team, too. I think we're not where we want to be yet."
Santana's first career slam came in the fourth inning off D-backs left-hander Patrick Corbin, who surrendered seven earned runs on a season-high 10 hits and owns a 9.00 ERA over his past five starts. Arizona has dropped back-to-back games for the first time in two weeks.