A Tim Hudson-Barry Zito pitching matchup could become a reality with the latter being recalled on Wednesday and the Giants heading to Oakland in late September.
The friends and former aces have made huge impacts on the Oakland A's and the San Francisco Giants over the years. Hudson and Zito both enjoyed the prime of their careers with the A's in the 2000s -- teaming with Mark Mulder to form "The Big Three" -- before helping the Giants win World Series titles in 2012 (Zito) and 2014 (Hudson).
Giants closer Santiago Casilla and A's reliever Dan Otero have the distinction of being the only active players other than Zito to enjoy their entire big league careers by the Bay. Casilla had mixed results in six seasons with Oakland (2004-2009) before reinventing himself in San Francisco, while Otero has donned the green and gold for parts of three seasons after being released by the Giants in 2012.
Cody Ross (free agent), Rajai Davis (Tigers), Brandon Hicks (Giants minors), Travis Blackley (Marlins minors) and Chad Gaudin (Dodgers minors) are other actives who have seen action in both uniforms.
Notable retirees from recent years include 2012 World Series hero Marco Scutaro and 2002 American League MVP Miguel Tejada. Hall of Famers Orlando Cepeda and Willie McCovey, A's great Vida Blue, former Giants manager Dusty Baker and all three Alou brothers (Felipe, Jesus and Matty) have all played for San Francisco and Oakland as well.
Even with all of this crossover, the Hudson-Zito meeting would go down as one for the ages -- for both franchises.
The full list, courtesy of BaseballReference.com: