At WrestleMania 23, the Money in the Bank match expanded to include eight men and would include stars from the revived ECW brand which was won by Mr. Kennedy. John Cena would go on to retain his WWE Championship against Shawn Michaels, while The Undertaker would win the World Heavyweight Championship from Batista. Representing Donald Trump, ECW World Champion Bobby Lashley defeated Umaga, who represented Vince McMahon, in a match billed as the "battle of the billionaires" and arbitrated by Stone Cold Steve Austin at WrestleMania 23.