The Yankees announced devastating news regarding their top prospect, Gleyber Torres, as the highly touted young infielder has been diagnosed with a torn ulnar collateral ligament and will require Tommy John surgery. Torres will miss the remainder of the 2017 season, though the Yankees note that they expect him to be ready for Spring Training 2018. (Recovery from Tommy John is typically shorter for position players than it is for pitchers.)
https://www.mlbtraderumors.com/2017/06/gleyber-torres-to-undergo-tommy-john-surgery.html
https://www.mlbtraderumors.com/2017/06/gleyber-torres-to-undergo-tommy-john-surgery.html