“Who's the greatest” has been a question asked in every sport over the years. Whether it's Muhammad Ali self proclaiming himself, or Tiger Woods being anointed by the masses, a general consensus quickly forms about a pecking order.

In football, it quickly comes down to Pele or Maradonna, Ronaldo or Messi, or another combination from a certain era. In tennis it comes down to dominance over a sustained period, with one era blending into the next of Rod Laver to Bjorn Borg to Pete Sampras to Roger Federer.

Motorcycle racing is similar in a lot of ways with riders typically earning their titles in spurts of sustained excellence.

Superbike racing is however a curious subset. With domestic series feeding into World championships, and some of the brightest WorldSBK stars being offered MotoGP seats after only a couple of years, at the same as riders step across to Superbike racing from Grand Prix for only a handful of seasons at the end of their careers, it's a strange combination of fluidity and constant change.

When you ask a Superbike fan who the greatest is you certainly get more than your fair share of choice.