Bryan brothers set for golden farewell

Legendary tennis tandem planning splashy exit in Rio

When tennis star Mike Bryan's phone rang recently and the police officer on the other end of the line told him his home security alarm had been activated, his first thought was the fate of the Olympic gold medal he earned with twin brother Bob at London 2012.

It's the most prized souvenir from a trophy-laden career that has earned the 38-year-olds 112 titles together, including 16 Grand Slams.