The Boston Red Sox have acquired Japanese pitcher Naoyuki Uwasawa from the Tampa Bay Rays for cash considerations, both teams announced Wednesday. The 30-year-old Uwasawa made the jump to the U.S. majors this offseason from the Pacific League’s Nippon Ham Fighters. He signed a minor league contract with the Rays, but was informed he would not make the team and exercised a contract clause to seek a major league deal with another club. Uwasawa struggled in four spring training games for the Rays, going 0-1 with a 13.03 ERA. He joins outfielder Masataka Yoshida as a member of the Red Sox but is n…