Leading second-round scores on Friday in the World Golf Championships Mexico Championship at Club de Golf Chapultepec (USA unless noted, par-71): 131 - Bryson DeChambeau 68-63 132 - Erik van Rooyen (RSA) 70-62, Patrick Reed 69-63 133 - Hideki Matsuyama (JPN) 69-64, Justin Thomas 67-66, Rory McIlroy (NIR) 65-69 137 - Sebastian Munoz (COL) 71-66, Tyrrell Hatton (ENG) 69-68, Paul Casey (ENG) 69-68 138 - Corey Conners (CAN) 68-70 139 - Lee Westwood (ENG) 69-70, Kevin Na 71-68, Matthias Schwab (AUT) 71-68, Billy Horschel 68-71, Bubba Watson 67-72, Louis Oosthuizen (RSA) 68-71, Tommy Fleetwood (ENG) 70-69, Gary Woodland 70-69 140 - Zach Murray (AUS) 71-69, Ryan Fox 72-68, Abraham Ancer (MEX) 70-70 141 - Danny Willett (ENG) 73-68, Jon Rahm (ESP) 72-69, Zander Lombard (RSA) 73-68, Shane Lowry (IRL) 72-69, Lanto Griffin 72-69, Im Sung-jae (KOR) 69-72 142 - Collin Morikawa 72-70, Justin Harding (RSA) 71-71, Matthew Fitzpatrick 72-70, Adam Scott (AUS) 74-68, Rafa Cabrera Bello (ESP) 71-71, Kevin Kisner 73-69, Matt Kuchar 75-67, Branden Grace (RSA) 71-71 afp