It’s about to be official. J.D. Martinez is finally ready to join the Red Sox. A press conference is expected on Monday morning to announce Martinez as the team’s new designated hitter, the offensive upgrade the Sox have been seeking for four months. News broke on Feb. 19 that Martinez had agreed to terms on a five-year contract worth $110 million, but an official announcement has been delayed while Martinez took a physical and final terms were settled. Martinez will play most of the year at 30 years old, and he has a .936 OPS with 128 home runs the past four seasons. His 45 home runs last year with Detroit and Arizona were 21 more than any Red Sox player hit in 2017. Team president of baseball operations Dave Dombrowski made clear from the beginning of the offseason that an offensive upgrade was his top priority, and he ultimately landed the most proven free agent hitter available.