The Browns gave up on another former first-round draft pick Wednesday, trading offensive lineman Cameron Erving to the Kansas City Chiefs in an exchange for a conditional fifth-round choice in 2018.

Of the 13 players the Browns drafted from 2007-16, only three remain on the roster: left tackle Joe Thomas (third overall, 2007), defensive tackle Danny Shelton (12th overall, 2015) and wide receiver Corey Coleman (15th overall, 2016). They obviously also have the three players they drafted in the opening round this year: defensive end Myles Garrett (first overall), safety Jabrill Peppers (25th overall) and tight end David Njoku (29th overall).

Erving proved to be a bust after former Browns General Manager Ray Farmer drafted him in the first round (No. 19 overall) in 2015 out of Florida State University.

The Browns had Erving on the trade block since the draft in late April, an NFL source told the Beacon Journal on Tuesday.

The franchise experimented with Erving, 25, at every position on the offensive line, whether in practice or games, desperately trying to find a way to salvage the first-round selection. He started 37 games at left tackle for Florida State before moving to center for the final five games of his collegiate career. He has yet to impress at any position in the NFL.

Erving struggled mightily when he started four games at guard as a rookie. Then after four-time Pro Bowl selection Alex Mack signed with the Atlanta Falcons in free agency last year, Erving became the starting center. He didn't perform well enough last season in 12 starts at center to keep the job.

The Browns moved Erving to right tackle for the 2016 regular-season finale and spent this offseason working with him at both tackle spots. However, he never could gain ground in a competition for the starting right tackle job, which is now held by 2016 third-round pick Shon Coleman. Erving also suffered a calf injury Aug. 15 and hasn't practiced since.

The Browns secured a starting center this offseason by signing JC Tretter to a three-year, $16.75 million contract.

Erving has two years left on his rookie contract. He's scheduled to make $1.29 million this year and $1.72 million next year.