Not with his roster or his schemes. But his comments to WEEI earlier this week when he invoked the three letters had media heads spinning in the buildup to Super Bowl LII: RPO.
Asked about the changes to the Chiefs offense since the last meeting between New England and Kansas City in last year's season-opener, Belichick highlighted the run-pass option plays coach Andy Reid has dialed up.
"Offensively, they've changed a lot because of the number of RPOs they run," Belichick said the Ordway, Merloni and Fauria show. "They run probably 10 RPOs a game. Maybe more that.