BBC Sport looks at how a proposed bout between Tyson Fury and Anthony Joshua hinges on a 24-hour-period between Friday and Saturday.

After more than a decade of posturing and power struggles - a soap opera of warring promoters, shifting managers, fractured television deals and failed negotiations - it has finally come down to this. The biggest fight in British boxing history - Tyson Fury versus Anthony Joshua - hangs on one final two-day stretch. On Friday, Fury, 37, fights Mariusz Wach in the unlikely surroundings of Pattaya, Thailand. There is no broadcaster, only a modest crowd expected and a 46-year-old opponent. The following evening, almost 4,000 miles away in Jeddah, Saudi Arabia, Joshua returns against Kristian Prenga - an Albanian knockout artist whom even the most hardened boxing fans would struggle to pick out of a line-up. If all goes to plan, Fury will leave Thailand within hours of beating Wach, board a private jet and fly to Saudi Arabia, where he is expected to climb through the ropes and finally stand face-to-face with Joshua. The contracts are signed but, especially in boxing, the ink is never truly dry until the opening bell rings. Fury and Joshua, 36, have defined British heavyweight boxing for more than a decade without ever sharing a professional ring. Yet they arrive at this moment for very different reasons. For Joshua, it is about far more than shaking off ring rust.