Klizan made the most of his opponent’s nervous start in the Casablanca final to break immediately and the 41st ranked Slovakian then saved four break points in the fourth game and built a 5-1 lead.
Gimeno-Traver, who was playing in his first final, dropped his serve in the third game of the second set and Klizan went up 5-2 – he fended off three other break points to serve out the match.
Klizan’s previous titles came in St. Petersburg in 2012 and Munich last season.
“It’s an amazing feeling right now,” said Klizan.
“Every time I am in Morocco, I have played a lot on Centre Court and seen the list of all the names. I wished to be a champion and today I am. I am very proud and excited now. The crowd was unbelievable, they always support me.”