Cubs Open Three-Game Series Against Diamondbacks in Phoenix

The Chicago Cubs open a crucial three-game series against the Arizona Diamondbacks on Monday evening, August 24, 2026, at Chase Field in Phoenix, as both teams fight for position in the National League Wild Card race.

Chicago holds a two-game lead over the Philadelphia Phillies for the top Wild Card spot, according to Sports Illustrated. Meanwhile, Arizona sits just two games behind the San Diego Padres for the final playoff berth.

Right-hander Kevin Gausman takes the mound for Chicago in Monday's opener against Arizona right-hander Merrill Kelly. Gausman is 6-11 with a 4.58 ERA overall this season, while Kelly enters with an 8-11 record and a 5.37 ERA.

The Cubs carry strong offensive momentum into the series following a 19-run performance in their Seattle finale on Sunday. Second baseman Pedro Ramirez and outfielder Ian Happ both hit grand slams in that victory.

Arizona continues to play without star second baseman Ketel Marte, who remains on the 10-day injured list with left knee inflammation and hamstring soreness. Ildemaro Vargas will get the start at second base in his place.

The series continues Tuesday night with Clay Holmes starting for the Cubs against Brandon Pfaadt, before concluding Wednesday afternoon with Matthew Boyd facing Eduardo Rodriguez.