When is Brook’s ring walk?
‘The Special One’ is expected to step between the ropes after 10pm for his must-win clash with Zerafa at Sheffield Arena.
Brook is possibly making a final appearance in his hometown, with a big-name battle, or a title fight expected next, but an unthinkable defeat could bring the 32-year-old’s career to a sudden halt.
Zerafa has suffered just two losses in 27 fights, stringing together eight wins since his last setback to Peter Quillin in 2015.
Will Amir Khan be attending the fight?
The long-awaited domestic clash between Brook and Khan was thrown into fresh doubt this week, with Khan entering talks for a fight with WBO welterweight champion Terence Crawford.
It remains to be seen whether Khan will make a surprise appearance at ringside to watch Brook.
Ireland’s Jono Carroll faces Frenchman Guillaume Frenois in an IBF final eliminator, with the winner becoming mandatory challenger for IBF super-featherweight champion Tevin Farmer.
Kid Galahad has already become the mandatory challenger for the winner of Josh Warrington’s IBF title defence against Carl Frampton next month and the Sheffield featherweight stays busy with a fight against Brayan Mairena.
Unbeaten Liverpudlian Anthony Fowler also targets his ninth straight victory as the exciting super-welterweight takes on Jose Carlos Paz.
How can I watch?
Watch Kell Brook vs Michael Zerafa in what could be his last fight in Sheffield, with Jono Carroll, Kid Galahad and Anthony Fowler on the undercard, live on Saturday, Sky Sports Action from 7pm, and Sky Sports Main Event from 8pm.
You can also follow the fights on our live blog on Skysports.com.