Loyal Steve Potts played an incredible 506 times for West Ham United after making his debut against Queens Park Rangers on New Year's Day 1985.
And now the former Hammers defender - whose 17 years in the first-team reckoning stand him in ninth-place in the East Enders' all-time appearance charts - will need to call upon all his powers of endurance, when he embarks upon this year's London Marathon on Sunday in aid of Children with Leukaemia.
"I went to watch last year's race and the atmosphere really inspired me to want to have a go myself," reveals Pottsy as he prepares to pound the capital's roads in the hope that he can raise the pounds for such a deserving cause. "After starting in January, I've got my running - if you can call it that - up towards 14 miles, which is a lot further than I ever had to run when I was training at West Ham United. In those days we'd come back for pre-season training and do four or five miles to blow out the cobwebs before getting on with the short, sharp drills.
"Leukaemia is a terrible illness and I've seen how it affects children, who have to endure painful chemotherapy, hair loss and all the other horrible side-effects. It's three-and-a-half years of treatment, which is very daunting and it's a very long road to recovery.
"This is now a great opportunity for me to try and do my little bit to raise some money to help these kids and, ultimately, to try and find a cure.
"People keep saying to me that I'll be fine because I used to play, but since I retired five years ago, I've gradually worked my way down from joining a gym and going three times per week to just a little jog around the block every now and then.
"I've never done anything like this before and although I'm really looking forward to it, I'm also dreading it, too!" continues the 40-year-old, who already knows all about those streets of London after passing the 'Knowledge' and qualifying as a fully-fledged taxi driver, last August.
"Since I got my badge, I've picked up quite a few of our fans. Some start talking football straight away, others do a double-take and there are even a few who don't recognise me - one punter even asked me which team I support! - which says a lot about the impression I made at the Hammers," laughs the ever-likeable Steve with all the modesty that epitomised his distinguished career.
For many, the highlight of his time at Upton Park was his solitary strike from those 506 honest outings in the claret and blue, but after netting in that 7-1 win over Hull City
"I want to raise as much money for Children with Leukaemia as I possibly can," he concludes. "And hopefully, the generosity of the West Ham United supporters can help me to achieve that."
To make a donation, please visit: www.bmycharity.com/pottsy or send donations to: Steve Potts, London Marathon c/o Children with Leukaemia, 51 Great Ormond Street , London , WC1N 3JQ