FORT WORTH, Texas >> Scottie Scheffler and John Pak enjoyed the same start to the Charles Schwab Challenge at Colonial with eagles on their respective first holes.

The world No. 1 couldn’t keep up with the PGA Tour rookie from there.

Four days after winning his third major at the PGA Championship, Scheffler opened his attempt at three consecutive victories with a 2-under 68 Thursday.

Pak shot 63 for a three-shot lead over nine players, J.J. Spaun the highest-ranked among them at 27th.

Tommy Fleetwood and 2023 British Open champion Brian Harman were among a group of nine players four back of Pak, and Scheffler headlined the 15 players who were five strokes behind.

Defending champion Davis Riley, who is playing the first two rounds with Scheffler, had two double bogeys on the front nine and shot 3-over 73 on the cozy course made famous by Ben Hogan, the only player to win Colonial in consecutive years (1946-47 and 1952-53).

Riley is coming off a runner-up finish to Scheffler at the PGA.

The others at 4 under with Spaun were Patrick Rodgers, Ryo Hisatsune, Matti Schmid, Beau Hossler, Bud Cauley, J.T. Poston and Ben Griffin.

Jordan Spieth, Scheffler’s fellow hometown favorite and former Texas Longhorn, shot 69 with birdies on two of his final four holes.

Scheffler opened the second of what he considers his hometown events by holing a putt for eagle from off the green on the par-5 first hole and a 23-footer for birdie on No. 2.

The Dallas resident played the final 16 holes in 1 over, missing enough fairways and greens to prevent a run at Pak, who finished several hours earlier.

The first of Scheffler’s consecutive wins came three weeks ago at his hometown CJ Cup Byron Nelson, which he led wire-to-wire for an eight-shot victory while tying the tour scoring record of 253.

Scheffler will have to come from behind this time, just as he did in the PGA Championship at Quail Hollow, where he faced the same first-round deficit before surging into the lead in the third round and repelling a Sunday charge from Jon Rahm.