Longest grand slam tennis match (doubles)

According to Official Guinness Records,

The longest Grand Slam doubles tennis match ever played is 6 hr 9 min for the Wimbledon quarterfinal match between Daniel Nestor (Canada) and Mark Knowles (Bahamas) and Simon Aspelin (Sweden) and Todd Perry (Australia) on 4-5 July 2006. Knowles and Nestor won the match 5-7, 6-3, 6-7, 6-3, 23-21.

For a complete list of 2006 records, please visit 2006 Guinness Records in Canada.

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