AUGUSTA, Ga.—Patrick Reed was coming off back-to-back eagles on Thursday and feeling in control when he striped a 7-wood onto the 15th green. But the 2018 Masters champion could hardly believe what happened next. His ball ricocheted off the putting surface as if he’d hit a ping-pong table before rolling into the water.  “That was a head scratcher for me,” Reed said. “The greens are already getting firm, crusty, and bouncy.”  But Reed isn’t done being confused. The course is about to get a whole lot worse.  When the third round begins on Saturday, it will be baked by some…