'Filling in on the fourth line last night for the injured Scott Pellerin, Rivers, normally a defenseman, played right wing and scored two goals in the Bruins' 3-1 win at the FleetCenter over the Buffalo Sabres. Rivers scored the first goal of the game on a backhander that he put past Bob Essensa at 14:11 of the first period, and then netted the game-winner on a power-play blast from the point at 8:18 of the second.'