Walker didn't factor into the decision in Friday's 10-5 win over the Orioles, retiring all nine batters he faced before giving way to the bullpen. He struck out four.
Walker (3-3) took the loss Tuesday as the Blue Jays were routed 20-6 by the Yankees, giving up seven runs (but only one earned) on six hits over 1.2 innings. He struck out two.
Walker allowed two hits and five walks while striking out three across four innings Tuesday against the Yankees. He did not factor into the decision.
Walker (3-2) allowed four hits and three walks while striking out four across six scoreless innings to earn the win Saturday against the Orioles.
Walker will start Saturday against the Orioles, Ben Nicholson-Smith of Sportsnet.ca reports.
The Blue Jays acquired Walker from the Mariners on Thursday in exchange for a minor-league player to be named later, Ken Rosenthal of The Athletic reports.
Walker is slated to start the first game of the Mariners' doubleheader with the Padres on Thursday, Greg Johns of MLB.com reports.
Walker won't pitch as scheduled Wednesday against the Padres as the two teams agreed to postpone the game in protest of the recent police shooting in Kenosha, Wisconsin, Jeff Passan of ESPN.com reports.
Walker, who's put together back-to-back quality starts, is drawing strong trade interest prior to the Aug. 31 deadline, Brandon Gustafson of 710 ESPN Seattle reports.
Walker didn't factor into the decision in Wednesday's contest between the Mariners and the Rangers. He gave up an unearned run on six hits and one walk while fanning five across six innings.