Daisuke Matsuzaka
During the offseason, Iwamura opted to be posted for Major League Baseball. The posts were due to the commissioner of Major League Baseball on November 10, 2006; the highest bidder would be granted the right to negotiate a contract with Iwamura. Incidentally, Daisuke Matsuzaka, who signed a six-year, $52 million contract with the Boston Red Sox that same year, is a close friend of Iwamura.