Former All Black Ali Williams joins The Rock for breakfast

All Black Ali Williams will join The Rock breakfast show.Photo / Greg Bowker

Former All Black Ali Williams is swapping the rugby field for a set of headphones as he joins radio station The Rock's breakfast show.

He will join co-hosts Roger Farrelly, Bryce Casey, Andrew Mulligan and Leah Panapa for eight weeks as the Morning Rumble sports reader, from August 5.

"Even though I'd get more sense out of my four-month-old than these guys, it'll be good to spend some time away from the house, Williams said.

"Plus, I've been on their case about giving me a job for years. Looks like I finally cracked them."

The Rock programme director, Brad King said: "Firstly, apologies to Ali for the fact that Roger may be the worst Captain he's ever had. But I am looking forward to having him on board nonetheless, and it will be great having the big guy come off the bench while sports guy John Day's on a sabbatical."