Baseball's business season began Thursday when 121 players become free agents, a group that includes Pablo Sandoval, Michael Morse, Jake Peavy, Sergio Romo and Ryan Vogelsong of the World Series champion San Francisco Giants. James Shields, Nori Aoki and Jason Frasor of the AL champion Kansas City Royals also were among the players who became free. Top free agent pitchers also include Max Scherzer and Jon Lester.