Sebastien Ogier has given himself an outside shot at victory in Mexico after winning the mammoth Guanajuato stage to cut Jari-Matti Latvala's lead to just over 70 seconds.
The reigning World Rally Champion made the most of his stronger road position - having led proceeding on the first three legs - to produce a phenomenal masterclass on the 80km Guanajuato stage, averaging a shade under 100km/h over SS22.
His stage-winning time of 48m 06.8s blew any the predicted times from the Volkswagen Motorsport team and he ended the penultimate course 25.3 seconds quicker than Latvala to cut the deficit to 1m 10.4s.
Despite it likely to be in vain with just the Power stage remaining it has piled on pressure for Latvala who will know any mechanical faults or mistakes on the final stage could hand the win to Ogier.
Hyundai's Hayden Paddon ended the 80km stage third, a full minute behind Ogier, to close the gap on Mads Ostberg in fourth with Dani Sordo looking comfortable to take the final rostrum position.
Ott Tanak in the DMACK Ford Fiesta RS WRC grabbed sixth on the marathon stage ahead of the driver who replaced him at M-Sport Eric Camilli as Martin Prokop, Lorenzo Bertelli and Benito Guerra completing the top ten.
The Guanajuato stage became the first 80km stage run in the World Rally Championship in 30 years but despite the potential danger it posed all WRC drivers safely negotiated the huge mileage.