Barrett Jones has been a 4 year starter for the consistently dominant Alabama Crimson tide. He has been ultra-versatile during his NCAA career starting 25 games at Right guard, 13 at Left Tackle and 14 games at Right Guard. A 2x All American and winner of both the Outland Trophy (best tackle) and Rimington Trophy (best center) he has been incredibly successful at all his positions. Jones has probably been one of the most decorated Offensive Lineman to come out of the college ranks for a couple of years. However his skills don't translate as well to the NFL as they did in the NCAA.
Barrett Jones is a difficult prospect to scout in my opinion, especially his run blocking. The Alabama O-Line was so dominant that the guards and tackles (Warmack and Fluker) were regularly paving large holes in all college defenses. As a run blocker in the NFL I believe that Jones will be satisfactory but not particularly great. If he gets the initial punch on the defender he is usually able to wall them off from the direction of the run. If he gets his hands into the chest of the defender Jones will not be beaten. However due to his overall lack of strength he won't be able to drive players back at the professional level. If the defender beats him off the snap Jones will be beaten for a tackle for loss. As a run blocker at the second level Jones isn't particularly great. He lacks the lateral agility to be able to get on to defenders. If the defenders see him coming they will probably sneak past him.
As a pass blocker Jones is slightly above average. Jones is susceptible to the bull rush move though and if defenders get below his pad level from the snap he can be driven back. (Think Antonio Garay on that poor Colts guard) At the NFL level Jones will need to get very low off the snap* and will have to try and use his technical abilities to stop himself from getting driven back. Against very good Defensive Tackles in the NFL, Jones will need help as his lack of agility and strength may lead to them being able to beat him.
The Chargers are weak at the Guard position. The recent signings of Chad Rinehart and Rich Ohrnberger help to fill the holes at the position but some competition is definitely necessary. Jones will hopefully be available in the 3rd round. He is a better guard prospect as a pro but can play anywhere on the O-Line in a pinch barring Left Tackle probably. If Jones doesn't become a starter he would be a good back-up due to his immense versatility. Our O-Line is weak on the whole so this could be the type of pick who helps to fill 2 holes at once. As a player Jones is probably nearing his peak right about now as he has maxed out his physical abilities and is technically sound. He can come right in and compete and this is why I feel he could be a good draft choice. Jones has good technique and has very good intangibles. This makes him an excellent fit for the Zone Blocking scheme that will be used this season for the Chargers.
*Hard for a 6"5 center/guard prospect