A hat-trick from Dane Gagai has delivered South Sydney an 18-10 win over Wests Tigers in a fiery NRL clash that could cost the Rabbitohs Latrell Mitchell to suspension.

Earlier in the evening, Gold Coast ended a 10-match losing run at its home ground in Robina, with a come-from-behind 16-12 win over the New Zealand Warriors.

Fireworks sparked early between the Rabbitohs and Tigers at Western Sydney Stadium and continued through the match, with Josh Reynolds put on report for kicking Rabbitohs centre Campbell Graham in the head while striking out at a loose ball.

The pair were chasing through a kick from David Nofoaluma and as Campbell was falling on the ball, Reynolds threw his boot towards it, collecting a forehead instead.

With Campbell prone on the turf, a scuffle ensued as Mitchell rag-dolled Reynolds, and he was lucky not to be sin-binned for the retaliation.

Mitchell collected Reynolds high around the back of the head with a swinging arm before throwing him to the ground, which could draw sanction from the match review committee.

It went unpunished on the field, but he was put on report later for a careless high shot on Tigers forward Luke Garner in the 62nd minute.

At the time the Rabbitohs led 18-0 thanks largely to a hat-trick from winger Dane Gagai, who ran riot on the right edge.

Uncharacteristically, Rabbitohs half-back Adam Reynolds missed all four conversion attempts from the right touchline, kicking one penalty goal for the match.

And while the Tigers were tough and mounted a comeback with two late tries, they were essentially victims of their own first-half ill-discipline.

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The Rabbitohs took advantage through Gagai twice in six minutes, with the winger running in to score two quick tries on the right edge against Tigers debutant Reece Hoffman.

It was a mammoth task for the 19-year-old to mark the Queensland winger after being called in late to replace Tommy Talau, who was withdrawn due to a hamstring injury.

Hoffman's inexperience was exposed again in the second half when his centre partner Moses Mbye raced off the line, leaving him to deal with James Roberts with an overlap on the edge.

Roberts had him covered in speed and strength, racing in to score his first try of the NRL season just after half-time.

But Hoffman had a moment of joy in the 69th minute when he scored the Tigers' second try to raise the intensity of the final minutes.

Titans score rare win at home

The Titans, firmly on the back foot after an error-riddled first half in Robina, kept the Warriors scoreless after the break to claim victory over the exiled New Zealand club.

The home side did not hit the front until the 75th minute when Beau Fermor scored his first NRL try on the end of a Jamal Fogarty grubber.

The win was the Titans' third of the season, and the first in Robina since they beat Newcastle in round six last year.

The Warriors will regret not making the most of a positive start to the first half when they had the Titans on the ropes.

Tries to Roger Tuivasa-Sheck and Ken Maumalo had the visitors up 12-0 inside 10 minutes.

It took the Titans 15 minutes to complete their first set of the match, but they were on the scoreboard soon after when veteran winger Anthony Don scored.

Warriors forward Jack Hetherington thought he had scored his first NRL try in the 31st minute after pouncing on a loose Bryce Cartwright pass but the bunker ruled he had denied Fogarty a chance to regather the ball.

That reprieve meant, despite a completion rate of just 47 per cent and 10 errors, the Titans trailed by just six points at half-time.

And they took full advantage with a much-improved second half, reducing the margin on the scoreboard to just two points soon after the break when some Tyrone Peachey magic allowed Sam Stone to score.

The teams traded blows for the remainder of the half, with the Titans losing and Keegan Hipgrave (shoulder), and five-eighth Ash Taylor (concussion) after a big shot by Warriors centre Patrick Herbert.

Despite the absences, Fermor's late four-pointer was enough to secure the Titans a hard-fought victory.

The Titans will face Melbourne at Sunshine Coast Stadium next Friday, while the Warriors are back to their temporary home in Gosford next weekend to play Cronulla.

AAP/ABC