NFL roster moves: Arizona waive LaRon Byrd, 2 others, sign 3 linemen

The Arizona Cardinals, suffering some depth issues on the defensive line because of injuries, have signed one and a pair of offensive linemen, while saying goodbye to a pair of receivers and one of their injured defensive linemen.

Arizona waived receiver Tyler Shaw and waived/injured receiver LaRon Byrd (one of the undrafted preseason stars of 2012 for the team) and defensive end Everette Thompson.

Thompson had recently injured his arm.

Replacing these three players on the roster are a pair of centers and a defensive linemen. They added centers Deveric Gallington and Kyle Quinn, and also signed defensive tackle Jonathan Mathis.

There had been 13 receivers on the roster, and it seems that the picture is clearing up a bit entering Week 1 of the preseason.

The situation with signing two centers is interesting. Nobody has mentioned Lyle Sendlein's name at all with struggles or injuries, and you have to figure that a pair of undrafted guys late into camp are going to be competing for a starting spot, so it seems that the coaching staff wants to get more looks than Mike Gibson and Scott Wedige (who actually has been listed recently as a guard). Perhaps there are some injury issues that have not been brought up.

This is also another goodbye to a player that had made the team under Ken Whisenhunt's staff and had been a highly touted undrafted player. He and William Powell had a lot of buzz last year at this time. Neither are employed.

Here are the bios for the new players.

Gallington (6-3, 315) is a rookie free agent who played collegiately at Texas Tech and was a three-year starter at center for the Red Raiders. He finished his career with 38 consecutive starts, including all 13 as a senior when he helped Texas Tech running backs rush for 1,674 yards during the regular season, the team's most rushing yards since 1998. After going undrafted, he signed with the Oakland Raiders, but was released on May 13.

Mathis (6-2, 300) played in all 13 games as a senior at Texas A&M in 2012 and had 23 tackles and one sack. An undrafted rookie free agent, Mathis played his first two seasons of college at Blinn Junior College before transferring to Texas A&M. He played in all 13 games as a junior at nose guard and had a career high 41 tackles and a forced fumble.

Quinn (6-4, 300) is a rookie free agent from the University of Arizona. After going undrafted, he signed with the Philadelphia Eagles, but was released on July 17. Quinn was a two-time All-Pac 12 honorable mention selection, including in 2012 when he played 10 games with nine starts. He helped the Wildcats offense have a 3,000-yard passer, a 1,500-yard rusher and a 1,000-yard receiver last year. For his career, Quinn played in 43 games with 22 starts.