John Bowker took grounders at first base on Friday.
"We expect Bowker to be able to play the outfield and first base. We went over signs and he did a good job. ... That he can handle two positions is a big plus," said Tatsunori Hara.
Hara is also thinking about trying other players out at different players during exhibition play, like Yoshihito Ishii at second and Daisuke Fujimura at short.
Michihiro Ogasawara and Yoshinobu Takahashi stayed back after general workouts on Friday for about fifty minutes of extra batting practice.