The Philadelphia Phillies and Arizona Diamondbacks enter a pivotal three-games series in Phoenix with fresh starting rotations.

The D-backs, who enter Friday two games behind the New York Mets in the National League wild-card race, will start right-hander Ryne Nelson (7-3, 3.34 ERA) in the opener after implementing a four-man rotation for the final nine regular-season games.

The Phillies adjusted for a different reason. After clinching a postseason berth Tuesday by winning the NL East, they opted to push No. 1 starter Cristopher Sanchez back to Tuesday, when he will pitch on six days' rest and also be in line for the playoff opener.

Philadelphia right-hander Taijuan Walker (5-8, 4.17) will start Friday, with Walker Buehler also expected to pitch multiple innings.

"It'll be a Walker Bue

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