The Decathlon World Record Holder, the French Kelvin Mayer has split with his long time coach Bertrand Valcin; and claimed the longtime covid-19 is of much influenced factor. Valcin had coached the 28-year-old Mayer for 12 years out of his Montpellier training camp in southern France which also includes Britain’s world heptathlon champion Katarina Johnson-Thompson. […]
