The traditional opener to Europe's red-clay season has become one of the Bryans' favorites spots.

WSJ: Americans Produce Feats on Clay

The Bryans remain tied with Australian duo Todd Woodbridge and Mark Woodforde with 11 each.

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The Bryans also took gold in the Olympic doubles for the United States.

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In the final, the Bryans whipped the world's No. 2 team and arguably its best on fast courts, Max Mirnyi and Daniel Nestor.

WSJ: Americans Produce Feats on Clay

The Bryans' latest win, in the Monte Carlo Masters last weekend, was particularly significant since they beat three key rivals in their final three matches.

WSJ: Americans Produce Feats on Clay

The Bryans this week are on Spanish soil, playing in Barcelona.

WSJ: Americans Produce Feats on Clay

Andy Bryans and winger Irwin went close to scoring tries before Irwin accepted a Nick Dempsey pass and touched down on 63 minutes for his side's second try.

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The Bryans, meanwhile, are 9-0 as a team on red clay in Davis Cup, and paired with Isner or Fish, have another three wins on red clay in three tries.

WSJ: Americans Produce Feats on Clay

In the quarterfinals, they routed Leander Paes and Radek Stepanek, a new team that twice beat the Bryans in straight sets on hard courts earlier this year, including in the Australian Open final.

WSJ: Americans Produce Feats on Clay

In the semifinals, they beat the Spanish duo of Marcel Granollers and Marc Lopez that could face the Bryans in the Spain-U.S. Davis Cup tie in September, which likely will be held on red clay.

WSJ: Americans Produce Feats on Clay

Isner's propensity for protracted battles early in majors often saps his energy by the middle rounds, while the Bryans, for all their success on clay in Masters events, haven't reached the French Open final since 2006.

WSJ: Americans Produce Feats on Clay