Use of Wimbledon roof has some players bewildered

WIMBLEDON, England — The Centre Court roof at Wimbledon closed Friday just as the sky was clearing up, and three matches were then played indoors without any rain falling outside.

A day earlier, the roof was shut in dry weather as well, causing a 45-minute suspension after the fourth set of Rafael Nadal's stunning second-round loss to ensure the match could be completed under the lights as darkness fell.

Those decisions have left some players and fans wondering just what the rules are for using the roof that was installed in 2009 to help alleviate some of the notorious rain delays that often plague the tournament.

Nadal was left shaking his head in bewilderment when told his match would be halted for 45 minutes, while Novak Djokovic was bemused to find himself playing indoors under "sunshine and clear blue sky."