(Sandwich, England)  --  Collin Morikawa shot a bogey-free four-under on Sunday to take home his second Major championship, winning the Open Championship at Royal Saint George's.  The Los-Angeles native shot 15-under for the tournament, beating out his closest competitor, Jordan Spieth, by two strokes.  Louis Oosthuizen, who led going into the final round, shot a one-over 71 to fall to into a tie for third at 11-under with Jon Rahm.