Jamie Murray combined with Bruno Soares, of Brazil, to secure their first ATP doubles title of 2017, at the Abierto Mexicano Telcel in Acapulco.
They beat John Isner and Feliciano Lopez 6-3, 6-3. It was the fourth title since the pair teamed up last year.
Murray said: "We did well to win the first match this week [against Marin Cilic and Nikola Mektic] because we were down for most of the match. But that's what often happens in doubles. You squeeze through the first match and go on to win the tournament.
"Today was a difficult match, a lot of good serving. We knew we weren't going to get loads of chances, but we were able to take the ones we had."
The win caps off a memorable weekend for the Murray family, after Andy Murray won his first singles title of the year in Dubai.