Spiegel will host with rotating guests as the show continues in its usual time slot of Sundays at 9 a.m. In the first show this Sunday, Spiegel will be joined by former Cubs pitcher Ryan Dempster.
"Matt is a baseball fanatic who loves the game and is loved by our fans," 670 program director Mitch Rosen said.
"I'm so happy Matt will take the mound every Sunday for the baseball season."
Spiegel will continue to co-host Inside the Clubhouse with Bruce Levine on Saturdays at 9 a.m. and also serve as a columnist for 670thescore.com.