Mathematical incompetence at the BBC

The BBC's report on the first day of the Ryder Cup includes this:

'The US won the opening foursomes session 2½-1½ but Europe surged back to clinch the fourballs 3½-1½ to take the overnight advantage.'

There are four points available in each half of the first two days, one per match. So how can the fourballs garner a total of five points. That's the trouble with employing a load of Arts graduates...