There might not be a more intriguing group of quarterbacks in the NFL than the collection of signal callers the Eagles have on their roster.

From their presumed starter, Sam Bradford, all the way down to their fourth-stringer, some guy named Tim Tebow, the Eagles have plenty of question marks for each of their quarterbacks.

Most of those questions won't be answered until training camp, which won't start until the players report back to Philadelphia on Aug. 2.

The past month of offseason workouts, however, has given the Eagles a good look at their quarterback position.

Here is a report card for each:

Sam Bradford

Positives: Bradford was destined to shine during offseason workouts, as he is able to just sit in the pocket and throw the ball without any pressure. His arm is without question the best on the team. Bradford throws an accurate, tight spiral, and can throw it further than any Eagles' quarterback has been able to since Michael Vick. If given time, Bradford has the ability to make all of the throws in this offense.

Another positive for Bradford is that after a little over a month of football activities, he hasn't suffered a setback. Granted he was limited, but it seems that Bradford's rehab from the injured ACL that cost him all of last season is going smoothly, which is perhaps the biggest positive the quarterback could have asked for.

Negatives: It is easy to point to Bradford's health as a negative, but as mentioned above, he hasn't suffered any setbacks. One issue for Bradford will be adjusting his body, when healthy, to getting back in football shape. His lower body appears to be very weak, the result of spending so much time in the rehab room the past year.

One issue for Bradford on Thursday, the team's final practice was his decision making. Bradford threw the ball right to safety Walter Thurmond, who picked it off in the endzone. Even if Bradford is healthy, that throw showed that it is going to take some time for him to adjust to being back on the field.

Grade: B-

Mark Sanchez

Positives: Bradford might have the best arm on the team, but as of right now, Sanchez is the best quarterback. It is clear how much more comfortable Sanchez looks in the offense after spending a year in it. Last year at this time, Sanchez looked awful during mandatory minicamp. This year he is moving the offense up-and-down the field, hitting his receivers in stride on each throw. His arm also looks stronger, the result of being two years removed from his shoulder surgery.

Negatives: There hasn't been many negatives for Sanchez so far. He hasn't turned the ball over, at least not during the practices open to the media. Whether that keeps up during training camp, and during preseason games, could decide if he has a real chance at the starting job.

Grade: A

Matt Barkley

Positives: Barkley had a strong set of practices. He seems much more confident out on the practice field, and has thrown the ball down the field more than the other Eagles' quarterbacks have. Barkley has had some very nice throws in the corner of the endzone, and seems to be able to put more touch on the ball than the previous two seasons.

Negatives: Barkley is in a bit of a tough spot. If he continues to play really well into training camp, chances are the team will try to trade him, maximizing on any potential value he might have then as opposed to during the draft. If his performance drops during training camp, he very well might be released.

Grade: A

Tim Tebow

Positives: For Tebow, even being out on an NFL practice field is a positive, after spending two years trying to make his way back into the league. So far what has stood out about Tebow is his athleticism. It is true that nearly anyone would look athletic compared to the other three quarterbacks on the Eagles' roster, but when Tebow takes off an runs during team drills, it is clear how much he could bring to this offense.

Tebow's throwing motion also seems to be improved. He doesn't have the quickest release on the team, but it is quicker than the last time he played at the NovaCare when he was with the New England Patriots back in 2013. Tebow has also displayed a strong arm, and has had a few nice touchdown throws over the past few weeks.

Negatives: What really hurts Tebow is his inconsistency. On one play, he looks like a player that could win with Chip Kelly as his head coach. On the next, you have to wonder if he should be playing tight end. Perhaps it is rust, but Tebow makes more bad throws than the other three quarterbacks combined. Tebow is probably the leader in the clubhouse right now for the third-string quarterback job, just because of his intangibles. But to truly succeed if called upon, he has to become much more consistent.

Grade: C+

Eliot Shorr-Parks may be reached at eshorrpa@njadvancemedia.com. Follow him on Twitter @EliotShorrParks. Find NJ.com Sports on Facebook.