Phil Mickelson overcame an early blip since Brooks Koepka struggled at the Shriners Hospitals for Children Open at Las Vegas to get into contention with a 65 that was first-round.
Mickelson bogeyed his first hole but hit to finish the day only two strokes while Koepka had two birdies to salvage a 70 which left him four shots adrift of his brother, Chase.
Taylor was hot over his opening after beginning in the 10th, he birdied 12 and 13 prior to launching a driveway that was pinpoint to five feet in the 15th and converting the opportunity for eagle.
The Canadian remained on a roster with further birdies in the next two holes as he turned in 30, even though he was more quiet on the external half and settled for 2 gains in the fourth and ninth holes to shut a 63 that earned him the outright lead to eight under par.
Brian Harman emerged together with Mickelson one of a group of five Americans at a share of third after he returned his very best score as February, the left-hander enjoying a run of four successive birdies mid-round at a 64, as Taylors closest challenger.
He added four more on the front nine, and mickelson began before responding with three birdies in four holes from the 13th and had been thrilled to flip his kind about after missing the cut final week.
I felt like I just needed to make a subtle fix here from last week, he explained. The par-five play was poor, bit I played with todays par-fives in 3 under a I took a good round. That was a pretty easy fix.
After the bogey on the first hole I played some really great golf. I kept ball and hit a lot of fairways. Now my iron play is good, and Im likely to hit it to make birdies when I continue to give myself chances by the fairways.
Im eager to play some great golf again. Things are great and Im excited to play golf, although I have had an awful six months off and on the course. It takes a great deal less energy, anxiety to carry out nicely.
Koepka, meanwhile, appeared somewhat out of sorts at his first competitive appearance since falling out to Rory McIlroy in the Tour Championship in August and has been just one around with four to play with prior to gaining some momentum to take into day with birdies at the ninth and sixth.
The world No 1 70 left him in a tie but his brother Chase was nicely set on five beneath after a card that was fresh and a 66 alongside Patrick Cantley, Bryson DeChambeau along with Adam Scott.