From the BBC live text...
1748: There are some very red faces out on Court 18, send sunblock immediately. Mahut leans on the net and chuckles after one point in the first visible acknowledgement from either man that they are involved in a ridiculous game of tennis. Ridiculous but record breaking as it becomes
officially the longest tennis match in history when it goes past six hours and 34 minutes. A 'shock' graphic will have to do the job.
That was 2 hours 20 minutes ago folks! This is already 50% longer than the previous record, and is about to hit 9 hours