Wexford Youths inflicted a first defeat of the season on last year's winners Peamount United at Ferrycarrig Park.
The west Dublin club travelled down the M11 on Saturday afternoon yet to concede a goal during their new campaign.
But an Ellen Molloy brace was added to by Nicola Sinnott to push the Slaneysiders into third place.
Shelbourne extended their lead at the top for four points, but had to come from behind to earn a point against Galway.
Chloe Singleton gave the hosts the lead at Eamonn Deacy Park, but Jessica Ziu, recently named in Ireland manager Vera Pauw's extended squad for the upcoming Euro 2021 qualifier against Germany, equalised on the hour.
Cork City picked up their first win of the season as substitute Laura Shine scored the all important fourth in a 4-3 win over Bohemians.
The Rebel Army led 2-0 at half-time at the Oscar Traynor Centre, before Bohs battled back.
Athlone Town also managed their first points of the campaign, twice coming from behind before beating Treaty United 3-2 at Lissywollen.
The victory was also their first since joining the WNL at the start of the season.