JACKSONVILLE, Fla. -- Blake Bortles' mechanics have not been flawless during the first three games of the season, but Jacksonville Jaguars offensive coordinator Greg Olson said they’re not the reason Bortles has not gotten off to a good start.

Bortles has made some throws in which he didn’t square his shoulders or has thrown the ball off his back foot. He has also held the ball too low and used a longer windup on several instances, but there are other circumstances that factor into Bortles' poor performances. Things like the lack of a running game and defenses taking away the deep throw to Allen Robinson.

"To me, the start of this thing certainly has been disappointing to everybody, but it’s not just Blake Bortles," Olson said Thursday. "I think we’re all involved in this thing, both coaching and playing and every position. It’s just a matter of him going out every day trying to be the best player that he can be, and he’s approaching it that way. He’s attacked it that way this week, and he’s had a good week of practice."

Bortles spent his first NFL offseason working with throwing coach Tom House out in California, revamping his mechanics and throwing motion. He shortened his windup -- trying to keep the ball up around his shoulder before throws -- and lengthened his delivery. He worked on tightening his footwork, too.

Those changes were noticeable in 2015 and helped him set franchise records in passing yards (4,428) and touchdown passes (35).

However, the Jaguars know Bortles is not going to be a completely clean quarterback in terms of his fundamentals. He’s a bit of a backyard player who likes to run around a bit and make plays, and sometimes he gets a little loose with his mechanics. His six interceptions and the fact that the offense is averaging just 18 points per game this season only draw more attention to that.

"I think it [his mechanics] is okay," Bortles said. "I can always be better. I think there’s times where I can get a little out of whack, but I think for the most part it’s been okay, I think by my standards. But it’s something that’s kind of a never-ending work-in-progress that I’ll have to continue to work on and improve for the rest of my career."

Olson said he reminds Bortles daily of his mechanics and uses individual drills to reinforce them, such as running a player at Bortles while he’s working on throws with the rest of the quarterbacks before team drills.

"He’s very well aware, but we always talk about mechanics," Olson said. "I think that’s been a big part of his development, really, when you saw him from his rookie year to last year and going into this season. We watch it every day in practice, in individual drills. Certainly he’s aware of constantly working on his mechanics. I think it will always be -- I wouldn’t say in the forefront of his mind, but he’s always very well aware of it."