There is a book of tricks, a book of calls, that an inside linebacker can use in that system,” Bruschi explained on the weekly ESPNBoston.com podcast. “Jerod knows all those calls and he’s starting to use his arsenal of calls, and utilize other players, other pieces on his chessboard, to put them in position so he can make plays.” On offense, Brady is a master chess player. Mayo is coming into his own as well. “It’s kind of like a quarterback: The linebacker has to make multiple, multiple decisions on every play,” coach Bill Belichick said. “So many different things happen in a split second during the course of the play, just like it is for a quarterback.