Sakurai posted on his blog Thursday that the fight has been postponed until DREAM 6.
DREAM had wanted Diaz and Sakurai to fight for the belt on July 21 at DREAM 5, but EliteXC needed Diaz for the second CBS event on July 26, which will take place in Diaz's hometown of Stockton, California. Diaz will face Thomas Denny.
Diaz earned a shot at becoming the first-ever DREAM welterweight champion when he stopped former King of Pancrase Katsuya Inoue at DREAM 4 in May.
Since Diaz also appears to be headed towards a rematch against KJ Noons for the EliteXC lightweight belt, the Sakurai fight at DREAM 6 is not set in stone.
DREAM 6 is the final round of the Middleweight Grand Prix. Ronaldo "Jacare" de Souza, Gegard Mousasi, Zelg Galesic and Melvin Manhoef are the remaining participants in the tournament.
Get the latest gear
