CHICAGO -- J'Marcus Webb's fortunes seemingly turned as quickly as the defensive ends in recent years rounding the corner past him for sacks.

Having started 32 consecutive games at left tackle, Webb entered training camp as the first-team right tackle. In a matter of days, though, Webb could be among the team’s cuts as it whittles down to 53 players.

After taking a demotion and a pay cut recently, Webb was among the bottom-of-the-roster types featured Thursday night in Chicago’s 18-16 loss to the Browns, struggling in a last gasp to make the team. With the starters sitting to prevent injury, Webb started at right tackle, and played every snap.

His performance seemed underwhelming. Officials called Webb for false start on third and 6 in the opening quarter. That moved the Bears from the Cleveland 33 to the 38, and after a failed third-down conversion, Robbie Gould kicked a 52-yard field goal.

Webb later gave up a pressure when he and right guard Derek Dennis were bull-rushed into Jordan Palmer.

The performance wasn’t all bad, but it likely didn’t convince the Bears to keep Webb.

Here’s a look at a couple other performances by on-the-bubble players battling for some of the final roster spots:

TE Fendi Onobun: After a training camp filled with drops and inconsistency, Onobun seemed poised for a rebound. Onobun caught the first pass thrown his way, but was later called for holding with eight minutes left in the second quarter. Onobun caught a 4-yarder the very next play. But in the second quarter, he dropped a slightly underthrown ball from Palmer. In the third quarter, a catchable Trent Edwards pass skipped off Onobun’s hands, resulting in an interception by James-Michael Johnson. Onobun did pull in a 20-yard reception in the third quarter. But the negatives outweighed the positives. It would be a surprise if Onobun makes the roster.

Allen vs. Ford: In this battle of the running backs, Michael Ford, an undrafted rookie out of LSU, seemed to emerge the victor. Ford ran for 48 yards on nine attempts, while Armando Allen, his main competition for the No. 3 running back job, gained 39 yards on 10 attempts. Allen was at a disadvantage coming into Thursday because he had missed time due to a hamstring injury.

S Brandon Hardin: Perhaps the long layoff was too much to overcome. Going into last season, Hardin hadn’t played in a football game since 2010. Then, last preseason, he suffered a neck injury on Aug. 26 that landed him on the injured reserve.

Hardin played the entire game Thursday, and didn’t make enough plays to turn heads. Hardin also gave up a 14-yard touchdown in the fourth quarter.