SAN FRANCISCO -- After an offseason so quiet that MLB players started openly saying words like "collusion" and "strike," teamowners have opened their checkbooks in a different type of way.Free agency was controversial, but there has been an unprecedented wave of contract extensions for star players, with more than a billion dollars handed out over the past week alone. There were new deals for superstar position players -- Mike Trout, Paul Goldschmidt and Alex Bregman -- but aces have cleaned up, too.