Contreras finished 2-for-4 with a home run, three RBI, a run scored and two strikeouts in Sunday's 4-3 extra-inning loss to the Cardinals.
Contreras' big blow came in the top of the ninth inning, as he hit a three-run bomb to tie the game and spoil closer Seung Hwan Oh's first official save opportunity following a Matt Carpenter error. The young backstop managed 12 dingers in 252 at-bats last season, and he's certainly a candidate to top 20 long balls over a full season.