Cubs 3, Pirates 2 (12 innings)

Pittsburgh Pirates third baseman Josh Harrison tags out Cubs second baseman Tommy La Stella as he tried to get a double, during the 10th inning.

Left to right, Cubs catcher Miguel Montero, starting pitcher Jake Arrieta, shortstop Starlin Castro, and second baseman Javier Baez during the eighth inning.

Cubs catcher Miguel Montero tags out Pittsburgh Pirates shortstop Pedro Florimon at home plate during the eighth inning.

Pittsburgh Pirates third baseman Josh Harrison leaps above Cubs first baseman Anthony Rizzo during the 10th inning.

Cubs catcher Miguel Montero tags out Pittsburgh Pirates shortstop Pedro Florimon at home plate during the eighth inning.

Cubs starting pitcher Jake Arrieta flips his bat after striking out with two men on base during the eighth inning.

Cubs Starlin Castro misses a single by Pittsburgh Pirates Neil Walker during the fifth inning.

Cubs first baseman Anthony Rizzo scores on the double by third baseman Kris Bryant during the sixth inning.

Cubs first baseman Anthony Rizzo is congratulated after scoring during the sixth inning.

Pittsburgh Pirates right fielder Gregory Polanco scores on an error during the sixth inning.

Cubs relief pitcher Clayton Richard throws a football to a teammate before the start of batting practice. Richard played quarterback in college.

Cubs starting pitcher Jake Arrieta heads back to the dugout after his error in the sixth inning allowed Pittsburgh Pirates right fielder Gregory Polanco to score.

Cubs players stretch during batting practice.

Cubs starting pitcher Jake Arrieta throws a pitch against the Pittsburgh Pirates during the first inning.

Cubs shortstop Starlin Castro heads to the field.

Cubs players stretch during batting practice.

Cubs second baseman Javier Baez arrives for batting practice.

Cubs second baseman Javier Baez arrives for the game against the Pittsburgh Pirates.

Cubs starting pitcher Jason Hammel throws a football to a teammate before the start of batting practice.

Helmets and hats are neatly assembled before the start of the game.

Cubs players warm up during batting practice.

Cubs starting pitcher Jake Arrieta throws a pitch against the Pittsburgh Pirates. during the first inning.