Nuno (0-3, 3.32 ERA) had trouble keeping the ball in the park in this one. He gave up a run in the first inning. And after the Mariners tied the game in the second, Nuno allowed fourth-inning solo home runs to Jed Lowrie and Hank Conger. He also served up a two-run shot to Carlos Correa in the fifth.
Nuno pitched an inning of relief on Wednesday, and thus hadn't started a game since August 22. In five August starts, Nuno went 0-2 with a 5.27 ERA.
But Machi was ultimately saved by a terrific catch in right field by Rusney Castillo to end the threat and close out the game, preserving the 4-3 win over the Yankees.
Machi has been scored upon in five of his 14 appearances since joining the Red Sox at the July 31 trade deadline. He is a perfect 4-for-4 in save opportunities, however. Despite Monday's rough outing, manager Torey Lovullo is committed to Machi as his closer for the time being.
With Bassitt out Tuesday, the A's will turn to reliever Cody Martin to start the contest. Martin is 2-3 with a 5.40 ERA over 21 2/3 innings.
He is on the disabled list with tendinitis in his right shoulder and could be activated Wednesday.
Allen has now converted six consecutive save opportunities, and hasn't allowed a run in his last six appearances.
The Yankees will find out Monday if they have a chance to reacquire their former closer, but as of Sunday night it appeared Robertson was unlikely to be dealt anywhere, per Heyman.