The Hamilton Tiger-Cats have signed free agent running back Kenton Keith to a three-year contract.Sources tell TSN the deal works out to an average of close to $145,000 per season.Keith joins a crowded backfield as local favourite Jesse Lumsden leads the team in rushing and Terry Caulley has filled in admirably when Lumsden has been out with numerous injuries. Source: TIGER-CATS AGREE TO THREE-YEAR DEAL WITH KEITH