The most interested spectator Saturday in Versicherung Arena for the WBA heavyweight title fight between defending Nikolai “The Russian Giant” Valuev and challenger David “The Haymaker” Haye will be former 2-time WBA title-holder John “The Quietman” Ruiz.

Ruiz (43-8-1, 29 KOs), the WBA top contender, agreed with the promoters for Valuev and Haye to “step aside” as the WBA “Official Challenger." By defeating ex-IBU champion Adnan “Aachen Assassin” Serin (19-10-1, 7 KOs) in Saturday’s 10-round co-feature on the “David vs. Goliath” Pay-Per-View event, he is guaranteed a title bout against the Valuev-Haye winner by the end of May, 2010.

Ruiz doesn’t necessarily care who wins the title fight between Valuev (50-1, 34 KOs), who “The Quietman” has dropped two close decisions to in Germany, and London-based Haye (22-1, 21 KOs). He will be watching Valuev-Haye closely, though, after his scheduled PPV-opening bout against Serin.

“I’m 0-3 in Germany and 6-0 fighting in England,” Ruiz joked, “so I g... Full Boxing Article here...