They sweated it out. A day after Simona Halep was hospitalized for dehydration after her Australian Open tennis final loss to Dane Caroline Wozniacki, No. 1 Roger Federer proved he could take the heat. The Swiss veteran endured three hours against Marin Cilic, 6-2, 5-7, 6-3, 3-6, 6-1, to earn his 20th major title and, at 36, become Melbourne’s oldest winner in 46 years. But trophies aren’t everything to new women’s No. 1 Wozniacki, who’s sent previous trophies to her parents but might keep her inaugural Grand Slam from Saturday.