Tommy Pham hit two first-pitch home runs, Ryne Nelson was efficient on the mound in his return from the minors and the Arizona Diamondbacks beat the Chicago Cubs 6-2 on Thursday night.

Ketel Marte added his 22nd homer to help the Diamondbacks win their second straight and move a half-game ahead of Miami for the last of the three NL wild-card spots. Chicago holds the No. 2 wild card, three games ahead of Arizona.

Nelson (7-7), recalled from Triple-A Reno a night earlier, gave up two hits while striking out three and walking two in the first 5 2/3 innings. Paul Sewald, the last of five Arizona relievers, finished for his 31st save.

Seiya Suzuki tripled and scored the first run for Chicago, which saw a four-game streak end and missed a chance to trim idle Milwaukee’s NL Central lead to one game. Dansby Swanson added a ninth-inning RBI single off reliever Joe Mantiply.

Assad pitched the first 5 1/3 innings, giving up seven hits while walking one with no strikeouts.

Arizona’s Zac Gallen (14-7, 3.48 ERA) faces fellow right-hander Jameson Taillon (7-9, 5.73) on Friday.