June 13 (Reuters) - Groupings for the first two rounds of this week's U.S. Open at Oakmont Country Club in Oakmont, Pennsylvania (first time listed is for Thursday's opening round, times are all local, add four hours for GMT, players U.S. unless noted, a- denotes amateur): Thursday (June 16), first hole/Friday (June 17), 10th hole 6:45 a.m./12:30 p.m. - Denny McCarthy, Aron Price (Australia), Mikael Lundberg (Sweden) 6:56 a.m./12:41 p.m. - a-Nick Hardy, Mike Van Sickle; Tom Hoge 7:07 a.m./12:52 p.m. - Patrick Rodgers, a-Sam Horsfield (England), Andrew Johnston (England) 7:18 a.m./1:03 p.m. ... More...