10:26am: The Marlins are working hard to sign free agent catcher John Buck, an official from another team told Ed Price of AOL FanHouse (Twitter link). Ken Rosenthal of FOX Sports tweets that the Marlins are definitely interested in Buck, but not close to a deal. Yesterday, Blue Jays GM Alex Anthopoulos described Buck's market as "very, very strong" and implied his agents at ACES seek a multiyear deal. Buck, 30, hit .281/.314/.489 with 20 home runs in 437 plate appearances for Toronto this year. He signed for $2MM after being non-tendered by the Royals.