UPDATE, 1:40: To make room on the 40-man roster, RH Andrew Moore, acquired from Seattle in the Alex Colome/Denard Span trade, was designated for assignment. Moore was 0-2, 12.98 in five games at Durham, allowing 29 hits and 10 walks in 17 1/3 innings. ... Also. Lowe will wear No. 35. DEVELOPING: The Rays are calling up prospect Nate Lowe, adding a power lefty bat to their lineup. Lowe joins the Rays as they are missing two key lefty hitters, with Austin Meadows and Joey Wendle on the injured list.How long Lowe will stay is not clear, but he fills a need for now as the Rays, despite having the best record in the majors, could use some more offense. Lowe advanced through three levels of the Rays’ minor-league system last year in earning player of the year honors and was off to a good start back at Triple A Durham, hitting .300 with three homers and 14 RBIs.Lowe plays first base, where he could share some time with Ji-Man Choi and Yandy Diaz, and can also DH. Christian Arroyo was optioned back to Triple A to make room on the 25-man roster. A move to add Lowe to the 40-man roster is still to be announced.