Cronulla's cross-town rivalry with Penrith is now treated like a true grudge match, according to Panther-turned-Shark James Segeyaro.
Friday's clash between the two teams shapes as a key one in the battle for the NRL top four, with only two points separating a logjam of teams between third and eighth.
Segeyaro is one of three ex-Panthers set to run out for the Sharks, alongside Matt Moylan and Wade Graham, while Luke Lewis remains injured.
Segeyaro, Moylan and Lewis all left the Panthers on differing terms, a point the PNG hooker said remains in the players' minds heading into the latest clash.
"In a way because you always have a bit of a rivalry and always have that sort of hate for them," Segeyaro said.
"For some reason it's not just another game for a lot of us that are from out west from Penrith. We always end up getting up a lot more than other games seeing as we started there."
Pressed further on his feelings towards Penrith, Segeyaro compared the rivalry to one between siblings.
"It's not hate, I wouldn't call it hate. It's like an older or younger brother you want to beat just to get one up on them.
"Seeing some of us didn't leave on our terms it always makes that motivation to beat them and walk off the field happy."
The rivalry between the two teams has also taken other twists in recent years.
Cronulla players and officials were fuming when Penrith supremo Phil Gould uttered the word "soft" in reference to the Sharks' 2016 premiership, while Michael Gordon, James Maloney and Jeremy Latimore are other players to have moved between the two clubs in recent years.
Segeyaro said he could notice in a difference in the motivation - most notably with Moylan - before the Panthers' tight win earlier in the year at Southern Cross Group Stadium.
"I remember just walking into the sheds and seeing the look on Matt Moylan's face and I knew we were going to win that day," Segeyaro said.
"It was just like a feeling within the group. The feeling you get compared to previous games. Some days within the group you know you're on."
The Sharks won't take the Panthers lightly - with or without their Origin stars.
Jarome Luai and Tyrone May ripped the Warriors apart last week, and Cronulla youngsters have seen Penrith's young brigade doing it for years in the under-20s where the two teams finished in the top four together in the last two years of the competition.
"There was just two or three years where they were just dominating the competition," No.9 Jayden Brailey said.
"Coming up against those guys you knew you had to be ready for a big one because they were a really good side and a lot of them have progressed into the NRL."