UPDATED: Sat., 10:10 a.m.
Cubs Special Assistant to the General Manager Gary Hughes confirmed that Murton had been recalled following Iowa's 5-2 win over New Orleans Friday.
"He was called up," Hughes said as he was leaving the visitor's clubhouse.
Murton was a late scratch from the initial starting lineup in Friday's game between Iowa and New Orleans. The lineup change was announced roughly one hour before the scheduled 7:05 p.m. (CT) start.
To coincide with the move, Chicago optioned Eric Patterson to Iowa.