Forget baseball.

Life outside the diamond might stress out Masahiro Tanaka, the Yankees' newest multimillion-dollar addition.

At least that's what Daisuke Matsuzaka said Tuesday, according to the New York Post. Dice-K would know about the adjustments the 25-year-old Tanaka must make. He was once in a similar position — starting anew in Boston after earning a lucrative deal via the old Japanese position process.

"It is a big deal right now," Matsuzaka told the newspaper. "It is something everybody is talking about. And it may cause him stress, among other things, coming over, a new environment and everything. At the beginning, he is going to have to spend a lot of time adjusting and adapting to life over here and baseball."

Dice-K, however, was optimistic.

"But as long as he is able to deal with that and overcome those things," he told the Post, "I think he is a pitcher who has talent, so I think he can have success over here."

Matsuzaka is competing for the fifth spot in the Mets rotation, and was speaking from the team's spring training facility in Port St. Lucie, Fla.