The Chiefs announced Thursday that restricted free agents QB Brodie Croyle, C Rudy Niswanger and OT Ryan O'Callaghan have signed their one-year tenders.
Croyle, a third-round pick in 2006, has played in 16 games with the Chiefs, starting nine. He started for an injured Matt Cassel in Week One last season and threw for 177 yards and two TDs at Baltimore. Injury-prone throughout his career, he'll be Cassel's primary backup in '10.
Niswanger signed with K.C. as a rookie free agent in '06 and has played in 46 games during his four-year career, making 31 starts. He's expected to remain the team's starting center this season.
O'Callaghan was acquired off waivers by the Chiefs prior to last season and proceeded to play in 14 games (12 starts). Before coming to Kansas City, he played for three seasons with the Patriots. Depending on what the Chiefs do in the draft, he could once again start at right tackle.
Following these moves, ILB Corey Mays and S Jarrad Page remain the team's only unsigned RFAs.
For the most authoritative NFL draft news and free-agency analysis, visit ProFootballWeekly.com.