Mets outfielder Carlos Beltran served as a designated hitter in an extended spring training game on Friday. Beltran had six at-bats, getting two singles in Port St. Lucie. A team official said it was a step in his rehabilitation and that Beltran did "nothing crazy" as far as baserunning. Beltran, 33, underwent Jan. 13 arthroscopic surgery on his arthritic right knee.