Jagaurs QB Blake Bortles said he spent two months in the offseason in California and was mentored at times by quarterback guru Tom House.

“Tightening mechanics,” Bortles said in explaining what House did for him. “Throwing with not just all arm, using the whole body and figuring out how to do that. Having a checklist and being able to say it was a bad throw and this is what went wrong and this is how you fix it.”

The Jaguars coaches weren’t allowed to start working with Bortles and the other players until the offseason program started this week, so the two-month workout helped Bortles work on fundamentals.

Bortles also spent four days throwing to tight end Julius Thomas and three young Jaguars, Marqise Lee, Clay Harbor and Tony Washington.

Bortles also got his weight down to 238 after finishing the season at 250.

Bortles averaged 12.0 fantasy points per game, which led to a #24 finish at his position. He's a passer who could make a leap in his second season if the Jaguars can give him time to throw and he can clean up his fundamentals. The receiving corps is young but talented, with Allen Robinson, Marqise Lee, Allen Hurns and potentially Justin Blackmon all capable of producing when given the opportunity. The team signed Julius Thomas to provide a dangerous weapon at tight end. Bortles averaged nearly 30 yards rushing, so he offers some baseline production as a runner.

Jaguars WR Allen Robinson’s late-July hamstring injury kept him out of every preseason game. But he had at least four catches in each of his last nine games and was targeted 10 or more times in four games. Robinson had eight “explosive” receptions and played 516 snaps.

Robinson underwent surgery in November for a stress fracture but is expected to be full-go when the offseason program starts in April.

“He’ll have an offseason, an OTA, a training camp and should be able to accelerate his game,” WR coach Jerry Sullivan said. “The thing about all these young guys, they come out of college, they train for the Combine and then they train for each team that wants to work them out. Now they can really compartmentalize what they need to do.”

Robinson averaged 5.2 catches for 61 yards and 0.22 TD from Week 2 to Week 10, which extrapolates to an 84-9774-3.6 over the course of a full 16-game season. Those are fringe WR2-type numbers. The Jacksonville receiving corps should feature Robinson, Marqise Lee, Allen Hurns and perhaps Justin Blackmon. If QB Blake Bortles can progress, this could be a dangerous passing game.

Greg Cosell on Jagaurs QB Blake Bortles:

This offseason, Bortles has to go back to basics. He lost his technique.

There are all kinds of valid reason for that – the Jaguars offensive line was below average, the offense was inconsistent, there was an inability to stay on schedule during games because of that inconsistency and the Jaguars trailing most of the time – but the bottom line is he lost his technique and needs to go back to school and start from scratch. I don’t mean that in a negative way. But before the Jaguars get to “What are the best route concepts against ‘Cover 4’ zone?” they need to work with him so he has repetitive proper fundamentals. Otherwise he won’t throw it accurately enough on a consistent basis.

One thing I noticed is Bortles started to have a tendency to drop the ball too low in his release. That throws off the timing, if the release and stride isn’t working together. Then you lose velocity and accuracy. Bortles has a good arm (though not a great one) but his arm strength suffers when the mechanics suffer. There are too many moving parts.

Bortles averaged 12.0 fantasy points per game, which led to a #24 finish at his position. He's a passer who could make a leap in his second season if the Jaguars can give him time to throw and he can clean up his fundamentals. The receiving corps is young but talented, with Allen Robinson, Marqise Lee, Allen Hurns and potentially Justin Blackmon all capable of producing when given the opportunity. Bortles averaged nearly 30 yards rushing, so he offers some baseline production as a runner.

The Jaguars are hiring Greg Olson to be their offensive coordinator.

Olson's offenses have been consistently mediocre, but Derek Carr showed some flashes last season. Olson's '06 Rams were 6th in yards and 10th in points scored. He'll lead a young offense featuring Blake Bortles, Allen Robinson, Marqise Lee, Allen Hurns and perhaps Justin Blackmon.

Despite significant contributions from three rookie receivers this season, the Jacksonville Jaguars are hoping Justin Blackmon will return in 2015.

General manager Dave Caldwell said Tuesday he's "hearing good things" about Blackmon, who is suspended indefinitely for repeated violations of the NFL's substance-abuse policy.

"We hope he comes back because we know he's talented," Caldwell said. "But we know he's also a good person that's fighting a tough battle. I think we have to treat it as a luxury. If he comes back, that's great. If he doesn't, we can't count on it."

Caldwell said in April he didn't expect Blackmon to play in 2014. He responded by drafting Marqise Lee and Allen Robinson in the second round and adding Allen Hurns as an undrafted free agent. The trio combined to catch 136 passes for 1,647 yards and nine touchdowns as rookies.

Blackmon certainly would bolster the unit, especially if veteran Cecil Shorts III hits free agency as expected. Blackmon voluntarily checked into a 90-day treatment facility earlier this season, and coach Gus Bradley said back then that updates from Blackmon's agent were positive. Blackmon was suspended without pay in November 2013 for at least a year for his latest violation. NFL rules prohibit coaches and general managers from having contact with players suspended indefinitely. Blackmon has already proved he has the talent, but would be a risky fantasy pick aside from a safer spot in the middle of the draft.

With Jags WR Allen Robinson out, HC Gus Bradley on Monday said rookie Allen Hurns and veteran Cecil Shorts III will start, but that Marquis Lee will move into the third receiver role.

Bradley said Lee continues to practice well and the rookie had his best two weeks of practice. However, Lee's role right now is as a WR3 with Hurns and Shorts the starters. Obviously by now you know the Jags offense is tough to count on in the fantasy world, but there should be opportunities for both WRs in terms of garbage time production. Hurns and Shorts are probably best suited for deeper leagues.

Of all the rookies drafted by the Jacksonville Jaguars to help the offense, the only one who hasn't made a noticeable impact at some point this season has been wide receiver Marqise Lee.

That's about to change.

With Tuesday's announcement that fellow second-round pick Allen Robinson will miss the final six games because of a stress fracture in his right foot, look for Lee to become more involved in the passing game.

Due in large part to problems with both hamstrings during training camp and early in the regular season, Lee has only 13 receptions for 141 yards and no touchdowns through 10 games.

There's nothing revelatory here, but it gives us a chance to discuss the Jaguar WR corps and how it might look now that Allen Robinson is out of the picture. Cecil Shorts should be the most-targeted player if he can stay healthy, which has been an issue this season. But we believe Allen Hurns will hold the most fantasy value due to his big play ability and status as the #25 fantasy WR this season. In the six games where Hurns has played more than 70% of the snaps, he has averaged 3.8 catches for 65 yards and 0.8 TD (on 7.3 targets), or 11.5 fantasy points, which are strong WR2 numbers. We can't count on the touchdowns, but the yardage is reasonable. The only issue with Hurns at this point is that he was knocked out of Week 10 with a concussion, and his status for Week 12 is unclear. As for Lee, we believe he'll serve as the team's WR3 as he hasn't played more than 40% of the snaps since Week 2. With TE Marcedes Lewis due back in Week 12, we don't see Lee as a major fantasy factor barring an injury to Shorts and/or Hurns.

The Jacksonville Jaguars have placed receiver Allen Robinson on injured reserve with a broken right foot.

Robinson broke his foot during Sunday's loss to Dallas in London.

A second-round draft pick from Penn State, Robinson has been one of Jacksonville's bright spots on offense this season. He had 48 receptions for 548 yards and two touchdowns, outperforming veteran Cecil Shorts III and fellow rookies Marqise Lee and Allen Hurns.

The Jaguars (1-9) say Robinson is seeking a second opinion regarding whether or not to have surgery.

The loss of Robinson means closer looks at rookies Lee and Hurns for the rest of the season as it's all about 2015 for the Jags. Robinson could very well come back as the team's number one, but for the most part, things are wide open for a lot of skill positions outside of quarterback.