Reds 3, Cubs 2

Reds relief pitcher Aroldis Chapman and catcher Brayan Pena celebrate a victory.   (Chris Sweda / Chicago Tribune)

Zac Rosscup fields an infield ground ball in the 8th inning.   (Chris Sweda / Chicago Tribune)

Chris Coghlan walks back to the dugout after striking out to end the 8th inning.   (Chris Sweda / Chicago Tribune)

Welington Castillo celebrates with teammate Matt Szczur after Castillo hit a two-run homer in the 8th inning.   (Chris Sweda / Chicago Tribune)

Welington Castillo is congratulated in the dugout after hitting a two-run homer in the 8th inning.   (Chris Sweda / Chicago Tribune)

Welington Castillo celebrates after hitting a two-run homer in the 8th inning.   (Chris Sweda / Chicago Tribune)

Reds left fielder Marlon Byrd watches as a ball that went for a two-run homer for Welington Castillo lands in the bleachers under construction during the 8th inning.   (Chris Sweda / Chicago Tribune)

Joe Maddon hands the ball over to reliever Zac Rosscup in the seventh inning.   (Chris Sweda / Chicago Tribune)

Chris Coghlan is unable to catch a ball that went for a double for Reds batter Zack Cozart in the seventh inning.   (Chris Sweda / Chicago Tribune)

Bleacher construction materials sit in the foreground as two men sit atop a left field rooftop to watch the game.   (Chris Sweda / Chicago Tribune)

Jake Arrieta walks to the dugout after giving up three runs in the fourth inning.   (Chris Sweda / Chicago Tribune)

Jake Arrieta reacts after giving up a run in the fourth inning.   (Chris Sweda / Chicago Tribune)

Anthony Rizzo throws his bat to the ground after popping out to third base in the fourth inning.   (Chris Sweda / Chicago Tribune)

Anthony Rizzo throws his bat to the ground after popping out to third base in the fourth inning.   (Chris Sweda / Chicago Tribune)

Anthony Rizzo throws his bat to the ground after popping out to third base in the fourth inning.   (Chris Sweda / Chicago Tribune)

Jorge Soler stands at home plate after striking out to end the first inning.   (Chris Sweda / Chicago Tribune)

Reds left fielder Marlon Byrd makes a catch of a line drive hit by Anthony Rizzo in the first inning.   (Chris Sweda / Chicago Tribune)

Reds starting pitcher Anthony DeSclafani delivers in the first inning.   (Chris Sweda / Chicago Tribune)

Starlin Castro makes a catch of a pop up in the first inning.

Jake Arrieta delivers in the first inning.   (Chris Sweda / Chicago Tribune)

Chicago Sky player Cappie Pondexter has a laugh after throwing out the ceremonial first pitch.   (Chris Sweda / Chicago Tribune)

With the bleachers seen under construction in the background, Cubs players stand for the National Anthem.   (Chris Sweda / Chicago Tribune)