The 29-year-old Walrond becomes the second pitcher brought up from Triple-A this past week. On Wednesday, right-hander Jae-Kuk Ryu was called up as left-hander Ryan O'Malley was placed on the disabled list (elbow strain).
Walrond becomes the sixth pitcher brought up from the minor leagues to Chicago following the July 31 trade deadline last month, joining Juan Mateo (Aug. 1), David Aardsma (Aug. 3), Angel Guzman (Aug. 13), O'Malley (Aug. 16), and Ryu (Aug. 23).
Walrond appeared in 31 games for Iowa this season and was 10-5 with a 3.98 ERA overall in 133 1/3 innings. He began the year in the starting rotation and was moved to the bullpen in July before returning to a starter's role earlier this month.
"We started him for a while and thought there would be a need out of the bullpen," Cubs Farm Director Oneri Fleita said. "He took a shot there, but we thought he showed his value throwing as a starter ... We thought we put him in the right spot so that if a need arises, we can utilize him and give him an opportunity to come up and help the big league club."
And Walrond hopes to do just that.
In a recent featured story on the southpaw, Walrond told Inside The Ivy, "Hopefully I have a good chance to get back to the majors with the Cubs or some other team. If I get a chance this September, I definitely would want to re-sign with the Cubs, because it would show me they have an interest in me, even if I came back to Iowa next year."
Walrond signed a minor league contract with the Cubs in the off-season. He made his major league debut for Kansas City in 2003, appearing in seven games for the Royals. He entered 2006 with 54 career minor league victories and a 4.00 ERA in over 800 innings.