Still, Luck's three fourth-quarter touchdown drives - the last capped by a 64-yarder to Phillip Dorsett against busted coverage - rattled the Jaguars' nerves. But Luck's fourth-and-1 pass at the Jacksonville 49 with 1:36 remaining fell from the hands of tight end Dwayne Allen to preserve the victory for under-fire Jaguars coach Gus Bradley.
"Our fan base here, that atmosphere out there, was unbelievable, and our team fed off it," he said in reference to the raucous sold-out crowd of 83,764, many of whom waved yellow Jaguars (1-3) flags and raised the volume whenever Luck had the ball.
The Colts (1-3) repeatedly self-destructed on offense with dropped balls and another costly Luck interception that led to Jacksonville's opening touchdown. The Colts proved just as reckless on defense as pass interference and unnecessary roughness penalties extended three Jacksonville scoring drives.
Jacksonville took a 7-0 lead after Dante Fowler Jr. shot through the middle of the line and batted Luck's pass sideways to teammate Yannick Ngakoue, who returned the interception 12 yards to the Colts 26. Bortles found Allen Robinson wide open on an inside slant for a 3-yard touchdown as Robinson easily beat Antonio Cromartie.
"When you have a turnover early in the game, you give up a short field and a touchdown, and 11 penalties that keep drives alive, guys have got to control their emotions, they've got to learn when to say when," Colts coach Chuck Pagano said. "Obviously we have to be better."
After a Jacksonville punt, Luck led a 12-play, 78-yard touchdown drive capped by his rollout scoring toss to T.Y. Hilton alone in the right corner of the end zone to narrow the score to 23-20.
"We'll go back and fix what we need to fix. ... This does not feel good and it shouldn't," Luck said.
Copyright 2016 by The Associated Press