Rory McIlroy Overcomes Hangover to Shoot 66 at RBC Canadian Open

The golfer admits a late night celebrating his caddie's birthday affected his early performance but still managed a strong opening round.

McIlroy teed off at 7:40 a.m. after celebrating with wine the night before.
He shot a four-under 66, tying for third place in the opening round.
The golfer recently attended a friend's wedding in Italy and spent time with family.
McIlroy's divorce from Erica Stoll was revealed earlier this month.
He aims for his third RBC Canadian Open victory with a second round tee time at 12:55 p.m.