THE Sharks have made four changes for their Super 12 showdown against the Cats at Ellis Park in Johannesburg on Saturday. Former Free State wing Stephen Brink replaces the injured Henry Pedro on the left wing, Shaun Payne comes in for Deon Kayser at centre, Hentie Martens gets an opportunity at scrumhalf at the expense of Chad Alcock and tighthead prop Etienne Fynn replaces John Smit. Brink will inject pace into the back line while Kayser and Alcock could feature as impact players. The Cats are likely to name their squad of 22 on Wednesday evening. The Sharks: Andre Joubert, Stefan Terblanche, Shaun Payne, Joe Gillingham, Stephen Brink, Henry Honiball, Hentie Martens, Gary Teichmann (capt), Wayne Fyvie, Charl van Rensburg, Mark Andrews, Steve Atherton, Etienne Fynn, Mornay Visser, Ollie le Roux. Reserves: Justin Swart, Deon Kayser, Chad Alcock, Warren Brosnihan, John Slade, John Smit, Chris Rossouw.