If Novak Djokovic justifies his tag of pre-tournament favourite, this will be the 20th consecutive Wimbledon that one of the 'Big Four' has won the men's singles title.
Even surprise finalists are rare: only three times in the past two decades has the runner-up come from outside the world's top 10 in those finals against Roger Federer, Rafael Nadal, Djokovic and Andy Murray.
One man who knows all about causing a Wimbledon final surprise is Chris Lewis.
Forty years ago, the New Zealander stunned the tennis world by reaching the men's singles final as the world number 91.