Eric Gordon scored 21 points and the United States pulled away after a sluggish first half to beat Tunisia 92-57 on Thursday in its final game of pool play at the world championship.

Five-time champion Roger Federer has breezed into the third round at the U.S. Open, serving 15 aces in beating 104th-ranked Andreas Beck of Germany 6-3, 6-4, 6-3.