In order to clear a roster spot for the newly-acquired Franklin Morales, the Red Sox designated reliever Hideki Okajima for assignment. "Morales is going to come in and be the second lefty in our bullpen," Boston general manager Theo Epstein told reporters on Thursday night. "He's somebody we think has some upside, throwing strikes consistently. He's a really hard thrower, a former top prospect. Think he's got some upside there as the second left-hander position. We needed a 40-man spot for him so Oki's going to be designated. We'll see if there's a fit for him with a trade somewhere. If not, we'll get him through waivers and he'll end up back at Pawtucket. "We weren't using Oki all that much, the way things have evolved lately," Epstein added. "Morales is somebody with significant upside. If we can get him to repeat his delivery and throw strikes, he could be tough to hit. He's going to take that second lefty in the bullpen spot, and we'll see if we can capture some of his upside."