Mike Bryan, who is in Switzerland for the United States' upcoming Davis Cup tie, tells USTA.com about him and his twin brother Bob’s recent experience while taking care of Bob's and his wife Michelle’s new baby daughter, Micaela.

"It was just a trip. We were both clueless," Mike said. "We are asking each other, ‘Why is she crying? Does she need to be burped? Is it the diaper? Is it the formula? What do we do?’ Every time we put her down, she would cry. He thought I was holding her wrong; it was the blind leading the blind."

Bob is skipping the tie; U.S. Davis Cup captain Jim Courier has not decided who will play doubles with Mike, likely choosing between Mardy Fish and John Isner.