Mike Bryan took the initiative while Bob Bryan took a tumble during the Davis Cup shot of the day on Saturday.
Gael Monfils let his showmanship shine in Frankfurt, but he also brought his team to the brink of victory with another solid singles performance.
The Italian scored major style point in an otherwise frigid match in Monterrey on Thursday night.
The 24-year-old says she needs to rest and restore her energy levels for the rest of the season.
Juan Martin del Potro has accepted a wild card into next week's BNP Paribas Open — his first tournament since Sydney in January.
Tweets indicate Serena's former hitting partner, Sascha Bajin, now working with Victoria Azarenka.
Dinner before the duel is a Davis Cup tradition. We go behind the scenes at this week's Davis Cup dinner parties.