Which ATP player has the best tennis outfits? According to Twitter, it’s not the usual suspects—Roger Federer, Rafael Nadal or Novak Djokovic. It’s world No. 237 Marco Trungelliti.

Tiafoe will debut his partnership with lululemon at the Australian Open. He will wear a custom Metal Vent Tech Tee and Pace Breaker Short in Passionate Pink as well as a custom Sojourn Windbreaker ...