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Rory McIlroy will miss the European Tour BMW PGA Championship due to rib injury. McIlroy is hoping to return in time for the 117th U.S. Open.
USA TODAY Sports

IRVING, Texas (AP) — While big-hitting Jason Kokrak has an AT&T Byron Nelson record five-stroke lead through 36 holes, he knows that is only halfway with plenty of other players who could make a weekend charge.

That includes top-ranked Dustin Johnson. But not local favorite Jordan Spieth after he missed the cut Friday for the first time at the tournament where he made his debut as a 16-year-old high school junior.

“Yeah, a bit shocking that’s how it happened,” said Spieth, who missed the cut by a stroke after a 5-under 75 that included a 9 at the par-5 16th hole after he hit two tee shots out of bounds.

FULL LEADERBOARD: AT&T Byron Nelson

Kokrak, ranked 128th in the world, shot a bogey-free 8-under 62 for his career-best scoring round and matched the Nelson’s 36-hole record at 12-under 128. No one has ever had a bigger lead there after two rounds than his five strokes over Billy Horschel (65), who finished with three consecutive birdies.

“It’s 36 holes. You’ve got the No. 1 player in the world chasing you, you’ve got x-number of other players that are outstanding players,” Kokrak said, when asked about having wiggle room. “Same game plan, just give myself birdie opportunities.”

Maybe as surprising as Kokrak’s big lead halfway through the last Nelson to be played at TPC Four Seasons is the 23-year-old Spieth, the 2015 Masters and U.S. Open champion, done playing this week.

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Spieth also missed the cut last week in The Players Championship. He last missed consecutive cuts in 2015.

With a 3-over total after the horrendous 16th hole, and needing at least one…