Kiwi sailor Blair Tuke is on course to be the first man to win the "true" Triple Crown if MAPFRE protects its lead through the rest of the Volvo Ocean Race.
If Tuke and his crew members on board the Spanish vessel reach the finish line in the quickest time, he will become the first person in history to win the Volvo Ocean Race, America's Cup and an Olympic title.
Read more: Sailing: Peter Burling and Blair Tuke prepare for life on opposite sides in the Volvo Ocean Race
Tuke teamed up with Peter Burling to get two-thirds of the way there by winning Olympic gold in Rio and the 35th America's Cup with Emirates Team New Zealand, but the pair then split after Tuke joined the Spanish team for the round-the-world race.
Sailing Illustrated outlined that if Tuke went on to win the Volvo Ocean Race, the "true" Triple Crown, it would be as crew member, not skipper.