Top American,
Taylor Fritz kept his
DC Open campaign on course on Friday evening seeing off Jordan Thompson after previously winning over Andy Murray.
His tie with Murray was rescheduled from Thursday, but he dealt with Thompson in half the time.
It was a 6-3, 6-3 win as he made it seven matches in a row unbeaten on home soil. This began with his Atlanta title run last week.
Next up is Tallon Griekspoor on Saturday for a spot in the final. The Dutchman defeated both Gael Monfils and J.J Wolf also on Friday.
"I've put in a lot of work the last couple of weeks before coming here. I knew that this is one of the most physically demanding parts of the season, playing in the heat," Fritz said post-match.
"I definitely wasn't training and preparing to play two matches in a day, especially one following a three-hour match.
"I came out tonight in the second match playing really well, being aggressive. I got early breaks in both sets, which was kind of my strategy, to kind of give it everything I had early, get up a break, and then I could coast a bit and focus on my serve games."
In the bottom half of the DC draw, Grigor Dimitrov advanced through walk-over against Ugo Humbert. He pulled out with a left leg injury.
The fifth seed will now face Dan Evans who took down Alexander Shevchenko followed by Frances Tiafoe.