Jon Rahm 9 back of leaders at PGA Tour’s Farmers Insurance
SAN DIEGO — Jon Rahm struggled to a 1-over 73 at Torrey Pines South, which has become one of his favorite courses, while Sam Ryder, Aaron Rai and Brent Grant all shot 8-under 64 on the more forgiving North Course on Wednesday to tie for the first-round lead at the…