PHILADELPHIA - The Eagles felt as if they let one get away on Sunday.

Despite a series of miscues and lousy defense, they still had a chance at winning instead of suffering a 33-30 loss to San Diego at Lincoln Financial Field.

"We left points out there offensively," Eagles coach Chip Kelly said. "You can't do that against a good team. One play can be the difference in a game and you don't know when that play is going to impact the game. We have to understand how important it is to make plays when you have the opportunity to make them."

Place-kicker Alex Henery missed a 46-yard field goal at the end of the second quarter that wound up being crucial.

They had a 37-yard touchdown pass from quarterback Michael Vick to wide receiver DeSean Jackson negated by rookie tackle Lane Johnson's second illegal formation penalty of the game.

"I thought I was on the line, but apparently, I wasn't," Johnson said. "I had two (penalties) and they may have cost us the game. They were stupid on my part and unacceptable."

Trailing 30-27 in the fourth quarter, Vick led the Eagles to the Chargers 14-yard line, but was forced to leave the game for one play because officials ruled that he was injured after an incomplete pass. Backup Nick Foles threw an incomplete pass on second down, then Vick returned for another incompletion that forced the Eagles to settle for a field goal.

"I won't say I wasn't hurt, but I wasn't 'hurt, hurt,' " Vick said. "If I am standing up, I'm not hurt. I'm ready to go, but the referee said I had to come out for a play. I think that was unfortunate for my team, but the referees are just doing their jobs."

Scary situation

Chargers wide receiver Malcolm Floyd was carted off the field on a stretcher after suffering a neck injury on the first play of the third quarter.

Floyd was trying to hold onto a pass from Chargers quarterback Phillip Rivers when he was legally hit by Eagles safety Nate Allen and linebacker DeMeco Ryans.

Floyd remained on the ground for several minutes while players from both teams knelt around him. As he was being wheeled into the tunnel, the fans gave him a standing ovation.

"He's doing fine," Chargers coach Mike McCoy said after the game. "All the tests right now look good, so it was great for the organization to go out and get a win for Malcolm."

Costly mistakes

Jackson lost his cool at an inopportune time Sunday.

Vick had just scored on a 2-yard run midway in the fourth quarter to give the Eagles a 27-23 lead when Jackson was penalized 15 yards for unnecessary roughness in the end zone.

As a result, Henery had to kick off from the 20-yard line instead of the 35. The Chargers' next possession began at the Eagles' 39-yard line and ended with Chargers quarterback Phillip Rivers throwing a 15-yard TD pass to wide receiver Eddie Royal.

"I kind of lost my emotions a little bit," Jackson said. "After going down and scoring, it was just the heat of the moment and things like that. I kind of need to do a better job of keeping my composure."

Henery actually had a shot at preventing that TD.

Eagles safety Colt Anderson forced Chargers kickoff returner Fozzy Whitaker to fumble. The ball shot straight at Henery, but he was unable to corral it and San Diego's Darrell Stuckey fell on it.

Henery finished the game with three field goals, but also had that miss in the first half.

"I thought it was good on contact," Henerey said. "But the ball stayed straight (instead of hooking between the uprights)."

Inside the numbers

Jackson finished the game with a career-high nine catches for 193 yards. It was his fifth career 150-yard game, tying him with Tommy McDonald for the most in franchise history. ... Michael Vick's fourth-quarter TD was his 36th career rushing TD, good for sixth place all time among NFL quarterbacks. ... Vick's 56 TD passes with the Eagles leave him in eight place on the team's all-time list. ...

Lineup changes

Brandon Boykin started at left cornerback against the Chargers in place of injured Bradley Fletcher. Fletcher missed the game with a concussion. Brandon Hughes, who was not on the roster for the opener before being re-signed last Tuesday, replaced Boykin as the slot cornerback.

Out of action

In addition to Fletcher, the Eagles' inactive list included quarterback Matt Barkley, defensive end Vinny Curry, tight end Emil Igwenagu, tackle Dennis Kelly, cornerback Shaun Prater and tackle Matt Tobin. Curry was deactivated in favor of backup defensive ends Clifton Geathers and rookie free agent Damion Square.

Bumps and bruises

Hughes left the game in the third quarter with a strained hamstring. Patrick Chung moved to cornerback and Earl Wolff joined Nate Allen at safety.

Up ahead

The Eagles (1-1) play host to former coach Andy Reid and the Kansas City Chiefs (2-0) on "Thursday Night Football." Former Eagles quarterback Donovan McNabb will also have his No. 5 retired as part of a special ceremony. The Eagles lead the series 4-2. The Chiefs, who are coming off a 17-16 win over Dallas, are visiting Philadelphia for the first time since 2009.

"Coach Reid is a father-figure to me," Jackson said. "He's a great guy. We've been keeping in contact throughout the offseason and preseason. He texted me after last week's game. With the relationship we have, I respect him to the utmost, but hopefully I'll be able to send him home with a loss."

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