The Chicago Bears wrapped up their three-day minicamp Thursday at Halas Hall, and here are some quick observations from the final session:

• Charles Tillman demonstrated his takeaway skills for the second consecutive day against the same victim: tight end Kellen Davis. Tillman pulled a ball out of Davis' hands and sprinted towards the end zone just as a Jay Cutler's pass hit the tight end’s chest during team drills. More impressive is that as Cutler barked out the cadence, Tillman told the defense exactly where the ball would be going on the play.

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Michael C. Wright ,eSPNChicago.comDraylen Ross is an imposing player, but he faces long odds on making the Bears' roster.

• He might not make the Bears' roster or any other NFL roster for that matter, but we’re giving the Thomas Jones “Big Guns” award to tight end Draylen Ross. Ross originally signed with the Bears in 2011 as an undrafted free agent out of the University of North Texas, and faces long odds to make the team. Based the size of his arms, perhaps he’s got a future in body building if football doesn’t work out.

• Rookie receiver Alshon Jeffery continued his inactivity in the final day of minicamp. Limited over the last two workouts with a lower-leg injury, Jeffery didn’t participate in any portions of the Thursday session at Halas Hall. Jeffery’s injury isn’t believed to be serious.

• Linebacker Brian Urlacher was also held out of practice along with Thaddeus Gibson, Jonathan Wilhite, Patrick Trahan and Adrien Cole.

• Veteran tight end Matt Spaeth spent Thursday rehabilitating his sore hamstring during the workout with athletic trainer Bobby Slater.

• With Spaeth out, the Bears worked Kyle Adams and Davis with the starters in double tight end sets.

• Edwin Williams took reps with the second team at center.

• Rookie Greg McCoy took reps with the second team opposite veteran Kelvin Hayden. McCoy hasn’t necessarily moved up the depth chart. It’s likely the rookie received those repetitions because the team held out Wilhite.

• Nick Roach continued to work at middle linebacker with Urlacher out of action. Free-agent acquisition Geno Hayes played in Roach’s customary strong-side spot.

• The Bears worked out two more tryout players on the final day of minicamp. The club brought in a pair of cornerbacks in Jeremy Ware, a former Michigan State standout drafted in the seventh round of 2010 by the Oakland Raiders, and Cornelius Brown, who signed with the Bears in 2010 as a rookie free agent.