Jacob Bridgeman closed in on a first US PGA Tour title on Saturday, firing an impressive seven-under par 64 to take a six-stroke lead over world number two Rory McIlroy heading into the final round of the Genesis Invitational.World number one Scottie Scheffler, who pushed his streak of PGA Tour cuts made to 68 without a stroke to spare after an erratic two days, climbed the leaderboard with a five-under 66 for five-under 208.