Has reached the televised stages of the World Snooker Championship on five occasions with his best result being a semi-finalist in 2013.
Won the 2012 Wuxi Classic and the 2014 International Championship.
Married his girlfriend Natalie Wilton with whom he was since 2010 in a short ceremony at New York City Hall in 2014.
In March 2015 reached his highest ranking, 6.
Was one of the Young Players of Distinction in a scheme run in 2000, designed to help young players develop their playing and media skills, alongside Shaun Murphy, Stephen Maguire and Ali Carter.
Won his first ranking title at the Shanghai Masters in 2008.
From 1 December 2015 his ranking is 12.
Was born in Chester but raised in Bagillt, north Wales.
The birth of his son in September 2015, caused Walden to withdraw from the Shanghai Masters.
Has been inside the top 16 in the season-ending rankings on four occasions.
Turned professional in 2000.
Made 196 century breaks so far.
Achieved the highest break of 147 during the 2011 PTC10.