Unlikely hero Aleksandr Nedovyesov clinched Kazakhstan's upset of Italy with a little help from Hawk-Eye on match point.
Andy Murray wore a precious look of surprise after he had outed his teammate for having a girlfriend on the go in Glasgow.
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.