Bob Costas has officially left HBO for MLB’s fledgling network that is aptly titled, MLB Network.

The move will not affect his relationship with NBC, where he has worked since 1980.

“No, we don’t have a problem,” NBC spokesman Brian Walker said.

Costas hosted the first-ever program on MLB Network, while HBO demanded cable exclusivity.

“Bob Costas was a terrific addition when he joined HBO Sports eight years ago, providing us with a distinct and unique presence,” HBO Sports president Ross Greenburg said. “Television is about change, and we respect Bob’s decision to move to the MLB Network.”

Micah Warren is a sports writer from New York and the founder of Blast's sports section and the Off the Record sports blog.