A national power outage delayed play at the Madrid Open, with Britain's Jacob Fearnley among those forced off court.
Fearnley had saved a match point in his third-round encounter against Bulgarian Grigor Dimitrov and was about to serve to stay in the match at 6-4 5-4 down when play was suspended on the main court.
The power cut meant the electronic line-calling system - which has replaced line judges - and scoreboards stopped working.
After a brief delay the umpire announced play would restart, with him making line calls in place of the system.