A Maddie Studdon field goal in the dying seconds has given Parramatta a 13-12 victory over Newcastle in the NRLW debut of both clubs.
In the earlier matches in the NRLW triple-header, the Brisbane Broncos defeated the Sydney Roosters 20-4, and St George Illawarra downed debutants Gold Coast 20-12.
Studdon was the hero for the Eels, breaking a 12-12 deadlock inside the final 30 seconds of the match against the Knights.
It had been a tight contest throughout the match, with the two sides level at 6-6 following the first half.
The Knights had led 6-0 after just four minutes, following a converted try to Romy Teitzel.
Tiana Penitani replied in the 31st minute, with Studdon adding the conversion to level the scores.
Newcastle's Phoebe Desmond and Parramatta's Simaima Taufa traded converted tries in the second half, before Studdon gave the Eels the one point they needed to seal victory.
Broncos hammer Roosters
The Broncos have sent an early message to their rivals by thrashing the Roosters.
The three-time premiers dominated the Roosters from the outset, with fullback Tamika Upton starring in what was a rematch of the 2020 NRLW grand final.
Emily Bass scored a double for the Broncos, with Roxette Murdoch and Millie Boyle also posting tries.
The Roosters were not helped by the loss of Corban Baxter on match eve to COVID-19, while their only try came through Olivia Kernick late.
Upton put on the play of the day when she stepped through three Roosters defenders in the lead-up to one try. She finished the match with 127 run metres and five tackle busts.
Boyle was immense, getting through 166 metres and backing up to score from the Upton bust.
The Broncos now have a 12-1 win-loss record in the NRLW, with their team having vastly more experience than any other in the competition.
Dragons spoil Titans' debut
Olympic gold medallist Emma Tonegato and rookie half Rachael Pearson have starred to help St George Illawarra beat newcomers Gold Coast.
Back in rugby league after eight years out while playing rugby sevens, Tonegato was brilliant for the Dragons from fullback in Newcastle.
She set up St George Illawarra's first try with a brilliant long ball and busted five tackles, as the Dragons dominated territory and beat the Titans out wide.
The Dragons led 14-0 with 13 minutes to go, before tries to Tiana Raftstrand-Smith and Shannon Mato launched a late Titans comeback.
But the Titans failed to complete on their final two sets, allowing the Dragons to finish the job with a Quincy Dodd try on the siren.
Teagan Berry scored a double for the Dragons, with Madison Bartlett also crossing the stripe.
Tonegato returned to rugby league after a decorated rugby sevens career, highlighted by helping Australia win gold at the 2016 Rio Olympics.
ABC/AAP