Rivas was recalled from Triple-A Iowa on Saturday, Tony Andracki of Marquee Sports Network reports.
Rivas was sent to the minors last week but will rejoin the Cubs after Frank Schwindel (back) was placed on the 10-day injured list Saturday. Although Rivas' playing time in the majors dropped before being sent to Iowa, he's starting at first base and batting eighth Saturday and should have a chance to carve out at-bats in Schwindel's absence.