Yankees’ Gio Urshela exits early as injury bug is relentlessness

Now the Yankees’ backups are getting hurt. Gio Urshela has been one of the unsung heroes for the beat-up Bombers, but the third baseman left Wednesday night’s game against the Mariners after the seventh inning, after fouling a ball off his left knee in the bottom of the frame. The Yankees announced X-rays were negative,…