Leading second-round scores on Friday in the US PGA Tour Puerto Rico Open in Rio Grande (USA unless noted, par-72): 133 - Brandon Wu 66-67 134 - Greg Chalmers (AUS) 66-68 135 - Branden Grace (RSA) 67-68, Rafael Campos (PUR) 66-69 136 - Jhonattan Vegas (VEN) 68-68, Cameron Percy (AUS) 67-69, Nelson Ledesma (ARG) 69-67, Thomas Pieters (BEL) 69-67 137 - Lucas Glover 68-69, Tim Wilkinson (NZL) 69-68, Andrew Putnam 67-70, Fabian Gomez (ARG) 66-71, Grayson Murray 71-66, Kim Joo-Hyung (KOR) 71-66 afp