He retired from WBZ radio in January 2009, and was inducted into the WBZ Radio Hall of Fame on July 9, 2009. The Patriots 2012 season was his final season of radio play-by-play.
Santos first began his work on Patriots games as the color commentator working with play-by-play announcer Bob Starr from 1966 through 1970 on WBZ 1030.[3] After Starr's departure from the Boston market following the 1970 NFL season, Santos took over as play-by-play announcer and handled that assignment for nine years. From 1980 through 1990, the Patriots' broadcast rights shifted—first to WEEI 590, then to WHDH 850—and Santos spent 11 seasons out of the team's radio booth, with John Carlson, Curt Gowdy and Dale Arnold serving as play-by-play announcers for those flagship stations. Santos returned as the Patriots' radio voice in 1991 when WBZ radio regained the team's broadcast rights.
From 1972 through 1978 and from 1990 through 2011, his partner in the booth was former Patriots kickerGino Cappelletti, except for the opening eight games of the 2001 Patriots season when Cappelletti was hospitalized with an illness and former Patriots player Peter Brock substituted for Cappelletti. Cappelletti retired from his position prior to the 2012 season and was replaced by former Patriots quarterback Scott Zolak.[6]
In April 2012, Santos suffered a bout with pneumonia and was briefly hospitalized, calling into question his future as Patriots play-by-play announcer.[8] He nonetheless announced he would return for one final season as Patriots broadcaster,[9] retiring after the 2012 NFL season. In April 2013, Bob Socci was announced as Santos' replacement.[10]
On September 26, 2010, the Patriots defeated the Buffalo Bills 38–30; it marked the 700th Patriots game, encompassing preseason, regular season, playoffs, and the Super Bowl, that Santos broadcast. His 750th broadcast took place on November 11, 2012, a dramatic 37–31 Patriots win, also against the Bills. He commentated 15 of the club's 19 playoff runs and six Super Bowls.
On December 30, 2012, Santos was rejoined by Gino Cappelletti for the first quarter of New England's 28–0 shutout of the Dolphins, his final regular season broadcast. CBS Sports also simulcast part of Santos' play-by-play during the game's first quarter.[11] Prior to the game, during a ceremony honoring the contributions of Santos and Cappelletti, Patriots Chairman and CEO Robert Kraft announced that Santos would be inducted into the Patriots Hall of Fame in 2013.[12]
The last game Santos commentated was in January 2013, the Patriots' AFC Championship Game loss to the Ravens, his 759th broadcast. Santos was inducted to the Patriots Hall of Fame on July 22, 2013, alongside fellow honoree Tedy Bruschi.[13]