Willis entered the league as a fourth round pick of the Seattle Seahawks in 2005 and brings 44 games of experience with him to Kansas City. As recently as 2009, Willis started all 16 games for the Seahawks.
Chiefs head coach Romeo Crennel and GM Scott Pioli were interested in bringing in players like Ugoh and Willis due to none of the backup offensive lineman having any NFL experience at tackle. Willis immediately jumps into a battle for the final spot on the line with second-year tackle David Mims.
The roster is still one short of the maximum, so we should expect to see Pioli add another new name sooner rather than later.