With huge eagle make at the last, Jordan Spieth co-leads AT&T Byron Nelson

McKINNEY, Texas – Jordan Spieth had his longest stretch all day of mere pars — a whopping four holes — on the besieged new home course of the AT&T Byron Nelson when the local favorite stepped over a 55-foot eagle putt on the par-5 18th.

Nothing but the bottom of the cup, and a share of the first-round lead with J.J. Spaun at 9-under 63 on a nearly wind-less Thursday.

Spieth, Spaun and plenty of others had little trouble with TPC Craig Ranch north of Dallas. There were 132 players in the field of 156 under par, with 94 of those in the 60s on the third venue in the past four Nelsons.

“It’s a good golf course, but it’s playing about as easy as it can play,” said 2018 Nelson winner Aaron Wise, who…