The Browns are switching to a base 3-4 defense in 2013, which means there is going to be some personnel turnover, even for players who performed fairly well last season. Defensive end Frostee Rucker is the first casualty of this defensive shift, as the Browns released him on Tuesday. Rucker was signed to a five-year, $20.5 million deal last year and was paid $6 million for his one year in Cleveland, including the $5 million signing bonus and $1 million base salary.