At British Open, Collin Morikawa Soars While Louis Oosthuizen Grabs a Record

After setting the 36-hole tournament record on Friday, Oosthuizen led at 11 under par going into the weekend. Morikawa and Jordan Spieth weren’t far behind.

SANDWICH, England — The scoreboard carrier on Friday looked even younger than Collin Morikawa, but the pace of changing numbers was getting to him. “So many birdies,” the carrier said on the 14th green as he switched out yet another red numeral on his portable board. “I’m losing track.” There would be seven birdies in all for Morikawa in the second round of this British Open on his way to a six-under-par 64, one short of the course record at venerable Royal St. George’s.