Buchholz (2-5) gave up one run on four hits and one walk while striking out six through five innings to earn the win over the Rays on Sunday.
Bucholz gave up six runs on six hits and three walks while striking out four through four innings in a no-decision against the Orioles on Monday.
Buchholz allowed seven earned runs on 10 hits and no walks while striking out four across 3.2 innings Wednesday against the Orioles. He did not factor into the decision.
Buchholz (1-5) was charged with the loss Thursday against the Red Sox, surrendering four runs on seven hits and a walk while striking out four across four innings.
Buchholz (0-3) allowed two runs on three hits over six innings Sunday, striking out three batters and taking the loss to Seattle.
The Blue Jays reinstated Buchholz (shoulder) from the 60-day injured list ahead of his scheduled start Sunday against the Mariners.
Buchholz shifted his rehab assignment to High-A Dunedin on Sunday, working four innings and giving up one run on four hits and no walks while striking out seven.
Buchholz thew two innings in the Gulf Coast League on Friday and will throw again on Tuesday, Alexis Brudnicki of MLB.com reports.
Buchholz (shoulder) threw a bullpen session last week, Alexis Brudnicki of MLB.com reports.
Buchholz (shoulder) will begin long tossing soon, Alexis Brudnicki of MLB.com reports.