American John Isner won the US men's clay court championship in Houston with a 6-3 7-5 win over top-seeded Spaniard Nicolas Almagro.
For fifth-seeded Isner, the runner-up in Houston last year, the title is his sixth on the ATP Tour, but his first on clay and his performance drew the praise of his opponent. He captured the 2010 Heineken Open title in Auckland.
"He did a really good job today - he played aggressive," said Almagro, who, like Isner, was playing in his first final of 2013.
"He served like normal, but today was tough for me. I want to congratulate him, because he's a really good player and a good person, and I think he did a good job this week."
World No 23 Isner broke the 12th-ranked Spaniard three times to secure the win 81 minutes.
Isner finished with seven aces to Almagro's five and set a tournament record with 64 aces during his run to the title, beating Pete Sampras' mark of 60 in 2002.