London | For the second time in her career, Tigst Assefa unlaced her running shoes, had a new marathon world record time inscribed on the side and held them up like a prized trophy.
The £450 ($930) Adidas Adizero Adios Pro Evo “super shoe” that she brought to world fame in Berlin 18 months ago has struck again, setting another world best and on the feet of both the men’s and women’s London winner for the second successive year.