Grillo shoot 63 to build 4-shot lead at Mayakoba Classic

Emiliano Grillo made birdie on half of the holes Friday on his way to an 8-under 63 that gave him a four-shot lead going into the weekend at the Mayakoba Golf Classic. No one was close enough to catch Grillo, who was at 13-under 129. It will be only the fifth time in 136 starts on the PGA Tour that he has a share of the lead after any round.