Rafael Nadal returns to action with win in Washington

Top-seeded Rafael Nadal overcame a mid-match swoon while rallying to beat the United States' Jack Sock 6-2, 4-6, 7-6 (1) on Wednesday in the second round of the Citi Open in Washington.

The match was Nadal's first since he sat out Wimbledon and the Olympics due to a foot injury.

The 35-year-old Spanish star won the first set, then led 3-2 in the second before Sock won six of the next seven games to take the second set a