Kenyan Mark Otieno hopes to book a ticket to race Usain Bolt at the IAAF World Athletic Championships

Jamaica's Yohan Blake, Ivory Coast's Ben Youssef Meite, Canada's Andre De Grasse, Jamaica's Usain Bolt, France's Jimmy Vicaut, USA's Justin Gatlin, South Africa's Akani Simbine and USA's Trayvon Bromell compete in the Men's 100m final during the athletics event at the Rio 2016 Olympic Games at the Olympic Stadium in Rio de Janeiro on August 14, 2016. / AFP PHOTO / Jeff PACHOUD

We have been here before so many times, it has become almost deja vu central: Usain Bolt heading a global championship with a question mark over his ability to produce his customary Midas touch.

This time we have reason to savour the uncertainty and anticipation all the more, because sadly we won’t be venturing this way ever again. So, here goes...