Bryan Hoch of MLB.com reports that the Yankees have promoted pitcher Alfredo Aceves from Triple-A. He becomes the first Yankee to wear the number 91. Why?

"When I was in high school, I used to watch basketball and the Chicago Bulls," Aceves said. "Dennis Rodman was one of the best players at that time. The way he played, you know? He made the other players [upset]. I liked that. They get frustrated."

"But I'm not nuts," he told Peter Abraham.

To make room, David Robertson was demoted. Robertson got off to a great start, allowing just 2 earned runs in his first 12 and 1/3 innings, but he has been largely ineffective for the past month. In the 13 and 1/3 innings that followed that dominant span, he has allowed 16 earned runs.