The Australian-American couple knocked off the top seeds Rajeev Ram and Horacio Zeballos 6-4, 1-6, 10-2 to reach the quarterfinals at the Washington ATP 500 event. With the loss, Ram misses an opportunity to overtake his full-time partner Joe Salisbury 1st in the Pepperstone ATP Doubles Rankings.
De Minaur/Tiafoe hit late in the opening set but quickly lost the second after failing to convert on the return from 15/40 from a 2-0 deficit. But they used runs of four and five straight points to dominate the match tiebreak.
Colombian Juan Sebastian Cabal and Robert Fara also advanced via match tiebreak on Tuesday night and finished in second place Wesley Koolhof and Neal Skupsky 6-4, 3-6, 10-8 by winning the final four points of the contest.
In previous double actions on Tuesday Rohan Bopanna and Matwe Middelkoop defeated Denis Kudl and Denis Shapovalov 6-4, 6-4 while Daniel Evans and John Peers dejected Hubert Hurkacz and Thomas Paul 7-6(7), 6-4.
Klaasen/Melo progress in Los Cabos
Rabe Klaasen and Marcelo Melo began hers Abierto de Tenis Mifel Campaign with victory on Tuesday against Belgians Sander Gilles and Joran Vliegen 7-6(4), 6-4 to reach the second round in Los Cabos.
The fourth-place finishers, who reached the finals together in Newport last month, saved all three break points they faced and triumphed after an hour and 36 minutes. You will play next Treat Huey and Steve Johnson.
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The Mexican-Argentine tandem hold a strong record in South America after lifting trophies in Cordoba and Buenos Aires earlier this year. You will face next Nicholas Barrientos and Miguel Angel Reyes Varela after the Colombian-Mexican team was eliminated Max Jacob Schnur and John Patrick Smith 6-4, 7-6(5).