SAN DIEGO -- Arizona Diamondbacks manager Kirk Gibson decided Wednesday to go with a six-man rotation for the rest of the 2014 season.

The immediacy of Gibson's decision worked against left-handed starter Vidal Nuno, who was scheduled to start Thursday night's finale of the four-game series against the San Diego Padres.

Nuno was pushed back, and he will start Friday night's game at Dodger Stadium with right-hander Randall Delgado starting the finale at Petco Park.

The change was something of a blow for the 27-year-old Nuno, who is a native of San Diego and worked in a concession stand at Petco Park. A number of Nuno's family members and friends from the south San Diego County community of National City were planning to attend Thursday's game.

Nuno, who was acquired from the Yankees in the Brandon McCarthy trade, is 0-4 with a 3.23 ERA in 10 starts for the Diamondbacks.

Josh Collmenter pitched seven strong innings Wednesday in the Diamondbacks' 6-1 win over the Padres. Chase Anderson and Trevor Cahill will start Saturday and Sunday, respectively, at Dodger Stadium. Following a day off Monday, Wade Miley will pitch the series opener at San Francisco on Tuesday.