Ryan Harrison safely into third round at Atlanta Open

American Ryan Harrison is comfortably through to the third round of the Atlanta Open by beating Igor Sijsling.

The 21-year-old came through in straight sets 6-4 6-3 against his Dutch opponent.

After an early break for the underdog, Harrison came storming back and eventually took the first set 6-4 in just under 45 minutes.

Harrison's serve improved in the second set and he needed much less time to take it 6-3 and move into the third round.

He will face Michael Russell or Santiago Giraldo in the next round.