Tony Stewart was crowned NASCAR's champion on a tiebreak on Sunday after his magnificent drive won the Ford 400 at the Homestead-Miami Speedway in a showdown with rival Carl Edwards.
Tony Stewart, one of auto racing's biggest names, announced on Wednesday he would retire from NASCAR driving after the 2016 season, saying: "Deep down you know when it's time to do something different."
The Davis Cup will remain an annual tournament despite persistent complaints from some players that it over-burdens an already-crowded schedule, the head of the sport's governing body said on Tuesday.