Chapman made his long-awaited debut on Monday against the Royals, surrendering a run on on two hits while striking out two.
The Cuban hurler has been one of the best relievers in baseball over the last six years, recording 146 saves with a 2.17 ERA. He should assume a spot in the back of the Yankee bullpen in short order, though it is worth noting that Andrew Miller has yet to allow a run this year as the interim closer.