The Tampa Bay Rays strengthened their bullpen for the stretch run Thursday, acquiring left-handed reliever Dan Jennings from the Chicago White Sox in a trade for first-base prospect Casey Gillaspie. Jennings, 30, is 3-1 with a 3.45 ERA this season. His 48 appearances lead American League lefties and are tied for second among all AL relievers behind Cleveland's Bryan Shaw. Jennings tweeted goodbye to Chicago on Thursday. read more http://www.espn.com/mlb/story/_/id/...ox-minor-league-first-baseman-casey-gillaspie
