Phelps will be the opener for Wednesday's game against the Red Sox, Mike Wilner of Sportsnet 590 The Fan reports.

EDGE Analysis

Phelps owns a 3.52 ERA and an 8:2 K:BB in 7.2 innings of work for Toronto this season. He'll face the toughest part of Boston's order before likely turning the ball over to Jacob Waguespack.