Chunichi Dragons right-hander Kenshin Kawakami and infielder Norihiro Nakamura declared themselves free agents, it was learned on Saturday.
The 33-year-old Kawakami said he wants to test his value on the market, including in the major leagues.
According to a team official, Nakamura, 35, isn't looking to leave the Dragons.
Another free agent declaration of note was the Yokohama BayStars' 34-year-old ace Daisuke Miura.
The 34-year-old righty said there is interest from a number of teams, including the Hanshin Tigers.