"We phoned Mike yesterday, and Sultan congratulated the legend with his 41st birthday," said Ibragimov's manager Boris Grinberg via Alexey Drozdov (Golden Grain general director) to Fightnews.com's Russian correspondent. "Mike thanked us for the greetings and wished Sultan all the best in his upcoming unification title clash with WBA champion Ruslan Chagaev. "Chagaev is known as the White Tyson", said the original Tyson, according to Mr. Grinberg, "That's incorrect. The only Tyson is me and not Chagaev. I don't think he is worthy of using such a nickname now." The WBO/WBA unification between unbeaten titlists Sultan Ibragimov (21-0-1, 18 KOs) and Ruslan Chagaev (23-0-1, 17 KOs) will take place in Moscow on October, 13. This bout, presented by NAFTA Moskva, and promoted by the Seminole Warriors Boxing, the Golden Grain Promotions and Sampson Lewkowicz in association with the Universum Box-Promotion, will be the first unification clash between reigning heavyweight champions for the last 8 years.