LOS ANGELES — Sam Burns wanted to pay respect to tough Riviera by playing it safe. It led to a 5-under 66 on Friday to tie the 36-hole record at the Genesis Invitational and build a five-shot lead going into the weekend.

Burns was at 12-under 130, matching the record last set in 2004 by Mike Weir and Shigeki Maruyama.

Among those chasing is Dustin Johnson, the No. 1 player in the world and a past winner at Riviera.