The Chicago Cubs moved to get more production from the outfielder positions Monday by promoting Ryan Sweeney from Triple-A Iowa and demoting outfielder Dave Sappelt. They also recalled right-hander Rafael Dolis from Iowa and designated right-hander Kameron Loe for assignment. “Obviously, our bullpen is a little beat up right now, so we needed an arm,” manager Dale Sveum said of Dolis. “Sweeney is just a guy we wanted to get up here anyway to kind of balance out the bench and (add) flexibility when we give (Alfonso Soriano) days off and things like that. He’s another guy on the bench who can hit and hit the ball out of the ballpark.” Sweeney, a left-handed hitter, has a .280 career average over seven major league seasons with the White Sox (2006-07), Athletics (2008-11) and Red Sox (2012). He was released by Boston on March 30 and signed with the Cubs on April 3. At Iowa, Sweeney had a .337 average with six home runs, 16 RBI and a 1.022 OPS in 23 games. Dolis rejoins the Cubs after a brief stint with the team in April.