Former Sharks wing Luzuko Vulindlu will face his former employers in their Currie Cup meeting with Griquas at GWK Park in Kimberley on Saturday.
In the sole change to the starting XV that beat the Golden Lions last week, Vulindlu replaces the injured Jannie Boshoff (hamstring) on the wing.
There are two bench tweaks as Simon Westraadt and Richard Lawson replace Matthew Dobson and Matthew Rosslee at hooker and utility-back.
Vulindlu played in Griquas' first Currie Cup game of the 2012 campaign against the Blue Bulls, but was injured in the process.
"It is very disappointing for Jannie that he got injured again," Human said on Monday.
"He played very well against the Lions and will be sorely missed against the Sharks.
"Luckily we've got Luzuko back. He was impressive against the Bulls before he got injured."
Having started poorly, Griquas seemed to be heading for relegation, but the five points they gained against the Lions puts them back in the hunt, with only eight points the difference between them and the top placed Sharks.
"We gained some much needed momentum against the Lions," Human said.
"Yes, there were still a few areas of concern, but we've looked at that this week.
"The team has been retained as much as possible to ensure we keep that momentum going. We need to keep going forward. We need to keep on winning."
Griquas: 15 Willie le Roux, 14 Luzuko Vulindlu, 13 Jean Stemmet, 12 Walter Venter, 11 Rocco Jansen, 10 Francois Brummer, 9 Marnus Hugo, 8 Leon Karemaker, 7 Wesley Wilkins, 6 Marnus Schoeman, 5 Martin Muller, 4 Rynhardt Landman, 3 Lourens Adriaanse, 2 Ryno Barnes (capt), 1 Steph Roberts.
Replacements: 16 Simon Westraadt, 17 Ivann Espag, 18 Frikkie Spies, 19 Justin Downey, 20 Jacques Coetzee, 21 Marnitz Boshoff, 22 Richard Lawson.
Date: Saturday, September 8
Venue: GWK Park, Kimberley
Kick-off: 15.00 (13.00 GMT)
Referee: Lesego Legoete
Assistant referees: Jaco Peyper, François de Bruin François
TMO: Shaun Veldsman