Jack Sock reached his first ATP final on Saturday with a straight-sets win over third-seeded Kevin Anderson in Houston, setting up an all-American title clash with Sam Querrey.

Sock needed one hour and 33 minutes to dispatch South Africa’s Anderson 7-6 (7-3) 6-3.

Eighth-seeded Querrey shook off a rain delay to defeat defending champion and sixth seed Fernando Verdasco 7-5 2-6 6-4.

Although Sock was able to convert only one of his nine break opportunities it was enough as he fired seven aces and won 77 per cent of his total service points.

“Kevin is not easy to play on any surface,” Sock said.

“I really enjoy playing on clay. I thought it gave me a little more time today against such a big server and big hitter.

The 22-year-old, ranked 46th in the world, has come back strongly from a pelvic injury that sidelined him in January and February.

His victory over 16th-ranked Anderson marked the third Top 20 win of his 2015 campaign and second this week. He toppled second-seeded Spaniard Roberto Bautista Agut in the second round.