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Nicolas Mahut and Austin Krajicek are playing together for the first time this fortnight in Miami.

Krajicek/Mahut Debut Gains Pace In Miami

First-time pairing reaches quarter-finals at ATP Masters 1000 event

Austin Krajicek and Nicolas Mahut’s seamless transition from doubles rivals to partners continued Sunday at the Miami Open presented by Itau.

Playing their first tournament as a pair, Krajicek and Mahut defeated Rafael Matos and David Vega Hernandez 6-3, 7-5 to reach the quarter-finals at the ATP Master 1000 event. The unseeded duo, which is competing together this week because Krajicek's usual partner, Ivan Dodig, is out with an injury, backed up its first-round upset of Nikola Mektic and Mate Pavic in style on Court 7.

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Their triumph against Brazil's Matos and Spain's Vega Hernandez was based on a high-class serving performance. Krajicek and Mahut sent down 10 aces, won 81 per cent (30/37) of points behind their first delivery and saved four of five break points they faced in their 90-minute triumph.

It was a 450th tour-level doubles victory for Mahut, who lifted the Miami trophy in 2016 alongside Pierre-Hugues Herbert. He and Krajicek’s next opponents at Hard Rock Stadium will be Maximo Gonzalez and Andres Molteni or Marcelo Melo and John Peers.