Ulster Elks and Pegasus have moved into the All Ireland League play-off places after wins on Sunday.
The Elks beat Railway Union 3-2 to move second in the table as their opponents dropped to fourth.
Only goal difference separates the Ulster sides as Pegasus defeated UCD 1-0 in Dublin.
At the bottom of the table Ards drew 1-1 at UCC to maintain a two-point cushion in the battle to avoid the relegation play-off.
The Elks are the league's form side with five wins in succession and they returned to Jordanstown following Saturday's 3-1 win over Greenfields in Galway to face a Railway Union side buoyant after a late 1-0 victory over Pegasus.
The Ulster side went behind early on to a goal from Emer Lucey but Megan Frazer pulled them level with a penalty corner strike in the 11th minute.
A fine solo effort from captain Gemma Frazer put the Elks in front at half-time but they were soon pegged back when Anna Heisterkamp scored early in the third quarter.
Almost immediately the home side went ahead again with what turned out to be winning goal coming from Jessica McMaster.
Pegasus had fallen out of the top three after their loss to Railway but they bounced back with Tate Doherty getting the all important goal at UCD to leave the university side in fifth place but three points adrift with only two matches remaining.
At the bottom, Ards retained their narrow two-point advantage over UCC a the two sides drew 1-1 on Sunday with Emma Barber and Chloe Brown exchanging goals.
Ards have a game in hand against Railway Union which will have repercussions at both ends of the table.