Gil is on his way back, but the Yankees could use another starter. Kelly, one of two Diamondbacks starters on the trade block ahead of the deadline, could fit the bill. The 36-year-old has been a dependable, durable innings-eater during his seven seasons in Arizona.

Here's what you need to know about the trade deadline, including the top players on the trade block and what moves the Yankees and Mets have made so far. Time: 6 p.m. In years prior, it used to be set in stone on July 31 at 4 p.m. ET. According to MLB.com, the commissioner's office can set the deadline from a date range of July 28 and Aug. 3.