With both J.J. Putz and Joe Nathan pitching very effectively in the season, reliever Jonathan Papelbon had only pitched 5.2 innings during the Cubs' first 34 games.
Thus, Papelbon was sent to the Arizona Diamondbacks in exchange for infielder Aramis Ramirez. Ramirez is expected to take over full time at third base with infielder Hank Blalock expecting to split time with the struggling Chris Shelton at first base. Shelton is hitting just .210 on the year with 2 homeruns in 119 at-bats.
In a corresponding roster move, the team optioned infielder Justin Leone and outfielder Luis Montanez to Iowa (AAA) and recalled pitcher Eddy Rodriguez and infielder Martin Prado.
Ramirez joins the team having hit .257 with 5 homers and 22 RBI's with Arizona.