Rafael Nadal remains on track to make history at this year’s Australian Open after beating Denis Shapovalov in five sets — 6-3 6-4 4-6 3-6 6-3 — on Tuesday.Rafael Nadal remains on track to make history at this year’s Australian Open after beating Denis Shapovalov in five sets — 6-3 6-4 4-6 3-6 6-3 — on Tuesday.