Britain's Joe Salisbury backed up the achievement of becoming doubles world number one by winning the Monte Carlo Masters with US partner Rajeev Ram.
The top seeds beat sixth seeds Juan-Sebastian Cabal and Robert Farah, of Colombia, 6-4 3-6 10-7.
In a clinical display, Salisbury excelled both at the net and with overheads, ably supported by Ram's powerful serving and volleying.
Salisbury and Ram claimed their first clay title as a pairing.
They produced a dominant display in the first set, but their level dipped in the second as Cabal and Farah stepped up the pressure, breaking serve after a shot came off the net cord and hit Ram in the groin.
The match tie-break brought high-quality tennis from both pairs, as Ram and Salisbury built up a lead after breaking the Colombians twice.
In a tight finish, Ram wavered on championship point, but steadied to close out on their third attempt.
"It's a first title on clay together and it's a surface that we thought was a weaker one for us. We worked well together," said Salisbury in his on-court interview.
Ram added: "I've got the best player in the world on my team - that helps."
Salisbury and Ram are the top seeds next week at the Barcelona Open.
Tsitsipas defends Monte Carlo crown
Stefanos Tsitsipas successfully defended his Monte Carlo singles title, beating Spain's Alejandro Davidovich Fokina 6-3 7-6 (7-3).
The Greek is the first back-to-back Monte Carlo champion since Rafael Nadal won three in a row from 2016-18.
"Things didn't see to be going well at one point but but I managed to stay well composed and am really proud of my game," said Tsitsipas in his on-court interview.
Last year's win heralded a successful run on European clay for the 23-year-old, who went on to reach the Barcelona final and win the Lyon title, before finishing as the runner-up to Novak Djokovic in the Roland Garros final.
Tsitsipas will be the top seed at next week's Barcelona Open.