US on fire

Golf: Phil Mickelson and Kevin Kisner rehearsed the dance from Three Amigos. The only question was whether to use it at the Presidents Cup. Their match was all square on the 18th hole yesterday. Mickelson was 12 feet away for birdie. ‘‘If this putt goes in,’’ Mickelson told his rookie partner, ‘‘we’re going to dance.’’ It did go in and their victory was the signal for one big celebratoy dance party for an American team that has gone nearly two decades without losing. They hammered the International teams to go unbeaten in fourballs and build an 8-2 lead, the largest margin after two sessions since the Presidents Cup began in 1994.