HOUSTON, Tex. – Call this one frustrating. Really frustrating.

Call it a missed opportunity, too – with the Jaguars missing a chance for a big victory, and doing so in heartbreaking fashion.

Parker Washington scored two touchdowns, and the Jaguars took a huge early lead, but they squandered a chance to sweep their AFC South rivals – with the Houston Texans rallying from a 19-point second-half deficit for a 36-29 victory over the Jaguars at NRG Stadium Sunday afternoon.

“We didn’t get it done,” Head Coach Liam Coen said, with quarterback Trevor Lawrence adding, “We have to be able to put a team away when you have them down that much.”

Added Lawrence, “You have to be able to close those games out. You have to win those.”

The lead marked the Jaguars’ largest in franchise history in a game they lost.

“The reality is we gave up a 19-point lead to lose the game,” Coen said, “and part of winning in the National Football League is sustaining a lead. We just needed one stop, didn’t get one and against a tough defense was hard, points were hard to come by.”

Added Lawrence, “We had our opportunities, we just didn’t take advantage of them.”

Quarterback Davis Mills’ 17-yard scramble with :31 remaining in the fourth quarter capped the Texans’ rally, giving them a 30-29 lead. The two-point attempt failed.

Coen called the Jaguars’ post-game reaction, “Disbelief.”

“You have a 19-point lead and you can’t hold on to it,” he said. “That’s disappointing. That’s really disappointing against an in-division opponent on the road where you’re controlling the game for the majority of it, with all three phases having an impact.”

Texans defensive tackle Sheldon Rankins returned a fumble by Lawrence 32 yards for a touchdown on the game’s final play for the final margin.

Washington, the Jaguars’ third-year wide receiver, scored the Jaguars’ first two touchdowns – both in the first half. Cam Little, the Jaguars’ second-year kicker, converted all three of his field-goal attempts to extend and protect an early lead built off Texans turnovers.

“There were a lot of things we left out there,” Lawrence said.

Washington scored on a seven-yard first-quarter touchdown reception for a 10-0 lead, and his 73-yard second-quarter punt return pushed the lead to 17.