The Mets expect center fielder Carlos Beltran to be in the lineup on July 15. Beltran, who had Jan. 13 arthroscopic surgery on his arthritic right knee, is expected to join the Mets in San Francisco when play resumes following the All-Star break. The end of Beltran's allowable 20-day rehab assignment in the minor leagues coincides with the Mets opening the second half against the Giants.