In little more than nine months time, in the same city, he hopes to still occupy that berth, only with a gold medal to show for it. Competing against Europe's finest at under-90kg, Purssey knows he will be up against it when he fights tomorrow, but any ranking points he can amass will help him towards his Glasgow 2014 goal.
Brought up in Chobham in Surrey, the 32 year-old's allegiance now lies with Team Scotland, having lived in Edinburgh for 11 years. He is one of a handful of English judoka who have been lured north of the border by the training regime, now based at Ratho. "I originally started in the old Edinburgh Club which was run by George Kerr on the corner of London Road," he recalled.
"When George left that business, we were basically training out the back in a building site and then we moved into a church hall before moving to the beautiful set-up in Ratho. I came up here purely for judo. I was a junior on the British team and I worked with Billy Cusack who was coach of the junior team.
"I was based at the National Judo Academy at Bisham Abbey but I felt my training was plateauing a bit. I came up to Scotland and loved training with the group up here and I moved up shortly after that."
Given that he has been in Scotland so long, he argues that there was never any doubt that he would go for Team Scotland at Glasgow 2014 as opposed to his country of birth.
"It wasn't really a difficult decision. I've been in Edinburgh for 11 years and class it as my home now," he explained. "Everything I've achieved in judo has pretty much been down to the guys I train with and my coaches here in Scotland. For me, there couldn't be any better reward than representing Scotland in the Commonwealth Games."
Purssey has already made his mark on international competition this year, winning bronze medals at the Pan American Open in Buenos Aires and San Salvador and achieving a fifth place at the Miami Grand Prix.
A keen American football fan - he was at Wembley last month to watch Minnesota Vikings beat Pittsburgh Steelers - he believes judo can learn something from the way NFL teams approach their sport, particularly how they analyse opponents on film.
"We do a lot of video analysis on our opponents but we also look closely at ourselves and where we're making mistakes and then go into training and try and correct them," he revealed. "We've even started to bring in technology where we can view ourselves in training and get instant feedback to correct mistakes.
"We're getting better at it but we need to catch up on sports like American football and even football here. I have a general interest in sport, being an athlete myself. I like rugby and a lot of my friends play in Scotland and I have family in America - my uncle is a big Steelers fan - so from speaking to them and watching a lot on television, I've become a big fan."
But there will be no distractions this weekend and he is under no illusions about what he expects.
"I hope to win the tournament," he underlined. "The last time we held a similar event in Britain, the World Cup, was two years ago and I finished third and I was a little disappointed, if I'm honest.
"I was in the semi-final and had a good chance of winning the match but made a silly mistake towards the end and could only win bronze. I hope to make up for that error this weekend."