Federer was given a thorough examination in his first meeting with the 19-year-old but despite Tiafoe's admirable effort, the Swiss great proved too strong to book his third-round spot and a possible meeting with Juan Martin del Potro if the Argentine can see off Robin Haase
Despite the gulf in experience between the players, Tiafoe underlined his status as one of the brightest talents in the game with a spirited display full of huge potential and winners off both wings.
