Tomas Berdych and John Isner, who both rank in the Top 10 for most aces hit in 2014, will meet for a place in the Roland Garros quarter-finals on Sunday.
Berdych, who leads Isner 4-2 in their FedEx ATP Head2Head series, has won their past two meetings and also their two clay clashes at 2010 Roland Garros and the ATP World Team Championship.
Sixth seed Berdych, who has been a permanent member of the Top 10 in the Emirates ATP Rankings for almost four years, recorded his 30th match win of the year with a 6-1, 6-2, 6-7(4), 6-4 victory over No. 27 seed Bautista Agut.
Tenth seed Isner fired into the fourth round for the first time, when he became the first American man to reach the Last 16 in Paris since Robby Ginepri in 2010. Isner beat No. 17 seed Tommy Robredo 7-6(13), 7-6(3), 6-7(5), 7-5. It broke his five-match losing streak against seeded players at the Grand Slam championships. He saved all 13 break points he faced.
Should Jack Sock and Donald Young win their third-round matches on Saturday, the United States would have three players through to the fourth round for the first time since 1995, when Andre Agassi, Michael Chang and Jim Courier reached that stage. Sock plays Dusan Lajovic and Young takes on Stan Wawrinka’s conqueror, Guillermo Garcia-Lopez.