With fourth place under threat, the Gulls thrashed Perth Glory 6-1, giving their goal difference a much-needed boost and keeping clear of Stirling (fifth) and Cockburn (sixth).
The Lions are just two points behind Sorrento, while the Cockerels are only three shy.
Reece Vittiglia kicked four goals for the Gulls in a home match that coach Jamie Harnwell described as a sign of improvement after a recent form slump.
‘We’re still working on our defending; we would have liked a clean sheet,’ he told nplwa.com.au. ‘On the flipside, we looked dangerous going forward.’
At Dorrien Gardens, eighth-placed ECU was unfortunate to go down 2-1 to second-placed Perth after a Mark Pritchard shot rebounded off the upright into the back of keeper Andy Banks and into the net in the 89th minute.
The Jacks had fought back from 1-0 down at half-time to level in the 66th minute.
Coach Dale McCulloch thought his side was worthy of winning the match.
‘I thought we deserved to win the game today let alone hold on for a draw,’ he told nplwa.com.au.
‘The game plan was to press them and I think we did that for 70 minutes. But those last 20 killed us.’
The Jacks face Armadale on Saturday, while Sorrento faces Floreat Athena on Sunday.