The second seed did not play a match in Spain’s ATP Cup campaign last week with a back problem and following his opening win in Melbourne he had said the injury was still bothering him.
The @RafaelNadal show rolls on 🥳Next stop: His 1️⃣5️⃣th #AusOpen third round.#AO2021 https://t.co/iFDeMTvhR0
— #AusOpen (@AustralianOpen) 1613047306000
Nadal showed no sign of discomfort, however, against the 177th-ranked American under the closed roof of the Rod Laver Arena and peppered the blue court with winners from both forehand and backhand sides as Mmoh watched on helplessly.
The 2009 Melbourne Park winner, who is tied with Roger Federer at 20 Grand Slam singles titles, will next meet either Briton Cameron Norrie or Russian qualifier Roman Safiullin.