Former major league pitcher Koji Uehara has told the Yomiuri Giants he is calling time on his playing career, baseball sources said Monday.The 44-year-old right hander, who made hade his professional debut with the Giants in 1999 and rejoined the Tokyo-based Central League club in March last year, is set to hold a press conference later in the day.Uehara won the World Series with the Boston Red Sox in 2013 and had stints in the big leagues with the Baltimore Orioles, Texas Rangers and Chicago Cubs.After rejoining Yomiuri last year, Uehara went 0-5 in 36 games with a 3.63 earned run average,…READ FULL ARTICLE