Madison Keys’ US Open run comes to early end again with loss to Elise Mertens

Madison Keys’ U.S. Open run has ended early once again.  The No. 14-seeded American was upset by Belgium’s Elise Mertens, 7-6, 5-7, 6-4, Friday night inside Louis Armstrong Stadium, marking the sixth time Keys has failed to make it past the third round of the tournament since her debut in 2011.  “First of all, I...