Roger Federer continued his strong start to the US Open with a 6-1, 6-2, 6-1 second-round victory over Steve Darcis.
After losing just five games in his opening match against Leonardo Mayer, Federer was once again in devastating form as he dispatched of Darcis in just an hour and 20 minutes.
The second seed was on the front foot from the outset, breaking Darcis in the third and fifth games of the first set to take the opener 6-1 in just 22 minutes, with Darcis having no answer to Federer's all-round brilliance.
The second set followed a similar pattern, with Federer breaking early to seize the initiative before grabbing another break to wrap up the set 6-2.
It was a matter of 'when' rather than 'if' Federer would secure the third set, and the 34-year-old wasted little time in taking care of the business at hand, breaking Darcis twice more. Fittingly, Federer served out the match with a love game that only further underlined his dominance.
It was all too easy for the Swiss who put on a sumptuous display of ball striking that will leave his rivals wary of the form and momentum he is building at Flushing Meadows.
Next up for Federer is a clash with Philipp Kohlschreiber after the German downed Lukas Rosol in straight sets.
Third seed Andy Murray had a considerably harder time of it as he was forced to come from two sets down to beat Adrian Mannarino 5-7, 4-6, 6-1, 6-3, 6-1.
After seeing the Frenchman claim the decisive second break in the opening two sets, Murray took his game to another level and required just over an hour-and-a-half to storm through the final three sets after slogging it out for 104 minutes in the opening two sets.
Murray will face 30th seed Thomaz Bellucci in the third round after the Brazilian beat Japan's Yoshihito Nishioka 6-0, 6-3, 6-4.
Lleyton Hewitt's final US Open run was brought to a close by compatriot Bernard Tomic, but not before the veteran Australian put in the kind of gutsy performance that he has become known for.
After being totally outplayed by Tomic in the opening two sets, Hewitt fought back, winning three games on the bounce to take the third set 6-3.
At 5-3 down in the fourth set, Hewitt broke back before levelling matters at 5-5. The 34-year-old was not finished either, securing another break in the 12th game to take the set 7-5 and push the match into a decider.
It was Tomic who broke first in the fifth set, but, as he always does, Hewitt fought back to get back on serve. However, Tomic broke Hewitt once more to take a 6-5 lead before serving out the match and completing a 6-3 6-2 3-6 5-7 7-5 victory in three hours and 26 minutes.
Earlier in the day, fifth seed Stanislas Wawrinka, 12th seed Richard Gasquet, 13th seed John Isner and 15th seed Kevin Anderson booked their places in the third round, but 21st seed Ivo Karlovic and 28th seed Jack Sock saw their campaigns ended.