Here is Al Michaels' statement on John Madden's retirement as issued by NBC Sports:
STATEMENT FROM AL MICHAELS ON JOHN MADDEN’S RETIREMENT
John will always have a unique place in the history of pro football.
No one has made the sport more interesting, more relevant and more enjoyable to watch and listen to than John. There's never been anyone like him and he's been the gold standard for analysts for almost three decades.
On a personal note, I'll miss working with John on many levels. As a broadcast partner, I could always count on him -- no one ever came to work more prepared. As a friend and confidante, loyalty has always been paramount to John. And all in all, he was simply just great company.
As John said today, 'it was time." That's John -- succint, pithy and right to the point. Working with John for the last seven years has provided memories I'll always treasure. My only regret is that it wasn't 27.