Though all eyes are on Louis Oosthuizen, Russell Henley and Mackenzie Hughes at the 121st U.S. Open, three former U.S. Open champions also made moves on Saturday and vaulted into contention. 2011 U.S. Open champion Rory McIlroy started the day at 1-over, six shots behind Henley and co-second round leader Richard Bland, but a sparkling 67, the low round of the day at...