Joel Makin is the first Welshman since 2002 to reach the top 10 of the Professional Squash Association (PSA) world rankings.
The rankings have been released for March and Makin, 25, replaces Egypt’s Mohamed Abouelghar in the top 10.
Abouelghar had been in the top 10 since September 2018, while Makin is the first Welshman to enter the top 10 since David Evans in 2002.
Mohamed ElShorbagy remains world number one, with the top five unchanged.
Ali Farag is second, Tarek Momen third and Karim Abdel Gawad fourth in an all-Egyptian top four.
Fellow Egyptian Mazen Hesham moves up two places to number 14 and ex-world number one James Willstrop climbs three places to 15th.
Egypt’s Ibrahim Elkabbani, who recently won the Jaipur leg of the HCL Squash Rackets Federation of India Indian Tour, climbs 154 places to become world number 263.
In the women's PSA world rankings, Belgium's Tinne Gilis is into a career-high position of world number 19.
It's her first time in the top 20 and she is one place below her sister, Nele.
The top 10 is unchanged, meaning Egypt's Raneem El Welily is number one for the 15th month in a row.
Nouran Gohar is second, Nour El Sherbini fourth and Nour El Tayeb fifth as four of the top five are Egyptian.
France Camille Serme ranks third in the world.
Austria’s Jacqueline Peychär is the biggest mover, climbing 52 places to become world number 183.