Australian Nick Kyrgios said he had experienced "one of the greatest weeks" of his life as he won his sixth ATP title at the Washington Open.
Kyrgios, 24, overcame back spasms and a poor opening set to beat third seed Daniil Medvedev 7-6 (8-6) 7-6 (7-4).
He hit 18 aces and never faced a break point against the Russian, and will now move back into the world's top 30.
"This is probably my best memory of a final. I left it all on the court," said Kyrgios.
"I've made massive strides. This whole week has been amazing.