@Mike in Houston - Welcome
Sam Rosen still sounds good at 76. Back in 1994, there were suits at MSG that wanted Marv Albert to call the SCF on local TV in NYC and Marv made it clear he would do radio on WFAN but not boot Sam from his gig. Sam was the last local announcer on TV to call up a Cup winner.
Rick Jeanneret in Buffalo had difficulty in his final years but he was in his mid-70s and they managed his schedule and it worked.
Jack and I go back to working at a TV station in Manchester, NH that in the 70s was an embarrassment. One day he had to fill in for 'Uncle Gus' and I wish the tape existed but it was hysterical.
Jack's next game will be on December 30th at home and in Detroit for New Year's Eve - the game in Buffalo is on TNT.
Alex Faust is NESN's preferred replacement with Mike Monaco close behind. The Joker is Dave Goucher as the Vegas TV situation is in flux. The RSN that VGK used for 6 years closed down and they are now using an OTA (over-the-air) network.
TV is a funny business - CBS kicked Walter Cronkite off the air in 1981 when he turned 65. NBC kicked Johnny Carson to the curb at 66 in 1992.