Santos (elbow) was placed on the 15-day DL due to inflammation in his right elbow, Bryan Hoch of MLB.com reports. Santos signed with the Yankees less than two weeks ago after being DFA'd by the Dodgers, and he'll head to the DL after making only two appearances. It's unclear whether the issue is considered serious, but it's likely that the team is simply hoping to avoid the inflammation developing into something that could hamper the reliever long-term.