NEW YORK (Reuters) - Top seed Amelie Mauresmo reached the second round of the U.S. Open a day later than originally scheduled when she beat German qualifier Kristina Barrois 6-1 7-5 on Wednesday.

After the rain delays of Tuesday, the Wimbledon champion resumed a set up but 5-2 down in the second to the world number 131.

Although Barrois got to within two points of levelling it up at one set apiece, Mauresmo won five games in succession to complete victory.

"When we came back on the court it wasn't easy but I was able to do it," the Frenchwoman told reporters.

"It's been a great year. I feel great physically, but tennis-wise I still have a few things to work on."

Mauresmo will play the winner of the match between American Meghann Shaughnessy and Italian Roberta Vinci.