Jamie Murray and Michael Venus celebrate their win in the Dallas Open final against Nathaniel Lammons and Jackson Withrow.

Wu Yibing celebrates his Dallas Open title on the campus of Southern Methodist University, which hosts the ATP 250.

Wu Yibing celebrates in Dallas after becoming the first Chinese player to win an ATP Tour title.

John Isner fires a backhand against Wu Yibing on Sunday in the final of the Dallas Open.

Wu Yibing in action during his maiden ATP Tour final against John Isner on Sunday in Dallas.

Wu Yibing celebrates his semi-final victory with the Dallas fans.

John Isner hits 31 aces and wins his 501st career tie-break to advance to the Dallas final.

J.J. Wolf advances to his second tour-level semi-final in Dallas.

John Isner holds a 500-319 career tie-break record.

Taylor Fritz was gifted a cowboy hat after his opening win in Dallas.

Taylor Fritz wins 91 per cent of his first-serve points in his opening Dallas win.

Wu Yibing advances to his fist tour-level quarter-final in Dallas.

Frances Tiafoe hits 15 winners in his opening Dallas victory.

Jamie Murray and Michael Venus advance on Wednesday in Dallas.

John Isner hits 22 aces in his first-round victory in Dallas.

Jack Sock advances past Ilya Ivashka on Monday in Dallas to set a second-round clash against Taylor Fritz.

Marcelo Arevalo and Jean-Julien Rojer defeat Lloyd Glasspool and Harri Heliovaara to win their first ATP Tour title together.

Reilly Opelka triumphs in Dallas to lift his third ATP Tour trophy.

Reilly Opelka fires 39 aces in a historic victory in Dallas.

John Isner fires 19 aces to maintain his perfect record on serve at the Dallas Open.

Jack Sock (left) and John Isner recorded five love holds, including four in a row in the second set, to advance in Dallas.

Jenson Brooksby hits five aces and wins 83 per cent of his first-serve points in a Dallas victory.

John Isner does not face a break point in his second-round victory against Kevin Anderson on Wednesday in Dallas.

Jack Sock does not lose serve on Tuesday in his straight-sets win against Oscar Otte in Dallas.

Kevin Anderson does not face a break point in his straight-sets win against Sam Querrey on Monday in Dallas.