Contreras hit a two-run homer in the Cubs' four-run first inning. His RBI single in the seventh put the team with the best record in the majors ahead to stay. He's batting .412 with eight RBIs after seven games in the big leagues.
While Contreras again excelled as a reinforcement for the injury-hampered NL Central leaders, they endured another setback when second baseman Ben Zobrist left the game after he was hit by a pitch on the left ankle.
Four pitchers held the Marlins to two hits, including Justin Bour's grand slam.
