LOS ANGELES - Justin Rose conjured a bogey-free 10-under par 62 to grab the first-round lead at Torrey Pines, where Brooks Koepka showed signs of rust but basked in a warm welcome on his return to the PGA Tour on Thursday. Five-time major winner Koepka's return -- after he jumped ship to the divisive Saudi-backed LIV Golf league that rocked the global game -- had dominated the build-up to the Farmers' Insurance Open. Koepka, who hadn't played a non-major PGA Tour event since the 2022 WGC Match Play, carded a one-over par 73 on Torrey Pines' South Course, where he said his reception from fans helped quell his first-tee nerves. "I just cared about my perception, what people thought or what the fans thought," Koepka said. "It's funny how you can walk off frustrated for sure," said Rose, who said he second-guessed himself on the tricky birdie putt.