Leading first-round scores on Thursday in the US PGA Tour Workday Charity Open in Dublin, Ohio (USA unless noted, par-72): 65 - Collin Morikawa 66 - Adam Hadwin (CAN) 67 - Nick Taylor (CAN), Hideki Matsuyama (JPN), Zach Johnson, Aaron Wise 68 - Pat Perez, Justin Thomas, Patrick Reed, Tim Wilkinson (NZL), Louis Oosthuizen (RSA), Roger Sloan (CAN), Adam Long, Chase Seiffert, Peter Malnati, Ian Poulter (ENG), Graeme McDowell (NIR) 69 - Steve Stricker, Matt Kuchar, Luke List, Sam Burns, Xander Schauffele, Jason Dufner, Troy Merritt, Andrew Putnam, Hudson Swafford, Keegan Bradley, Brendan Steele, Jason Day (AUS), Matt Jones (AUS), Sepp Straka (AUT), Joaquin Niemann (CHI), Viktor Hovland (NOR), Shane Lowry (IRL), Rory Sabbatini (SVK) afp