Bryan brothers lose doubles opener
Ivan Dodig and Marcelo Melo marked their debut at the ATP World Tour Finals with a win over three-time former champions and World No. 1 pair Bob Bryan and Mike Bryan 3-6, 6-3, 10-8, in Group A on Tuesday.
Dodig and Melo improved to 2-2 against the Bryans, beating the Americans for the second time in four weeks.
The Bryans, who have won 11 titles this season, are playing at the year-end tournament for the 11th time.