PACIFIC PALISADES, Calif.—Joaquin Niemann shot back-to-back rounds of 63 (-16) to break the 36-hole record and lead the Genesis Invitational, hosted by the Riviera Country Club, on Feb. 18. “It was great to have a good start like this after a good round from yesterday,” said Niemann. “I hit the ball great again.” Niemann began…