Knowing defeat would likely spell the end of their top six chances, the home side played their part in a willing battle which saw four yellow cards dished out in the first 22 minutes, three of them to Newcastle.
David Williams saw his header pushed onto the post by Moss after 30 minutes before the first goal arrived, very much against the run of play. The Jets' Venezuelan playmaker Ronny Vargas showed sumptuous skill to collect the ball in the penalty area, evade three would-be defenders with quick feet and an exquisite drag-back before planting the ball into the roof of Sail's net.
While they struggled to assert the same level of dominance immediately after the break, Wellington squared the ledger through a precise side-footed finish from Williams, his fourth goal in six outings and the sixth of an increasingly productive season.
Shortly afterwards, the Jets were denied by two wonderful saves from Sail, bookending a Roy O'Donovan strike against the post. Sail then denied Jason Hoffman from close range as the Jets pushed desperately for a win to keep their playoff hopes alive. As the game opened up, Alex Rufer – who enjoyed another stand-out evening – and Krishna spurned chances to win the game for the Phoenix before Sail again repelled O'Donovan in added time.
Wellington now have an eight-day break before they welcome glamour side Melbourne Victory to Eden Park next Friday evening.
Newcastle Jets 1 (Vargas)
Wellington Phoenix 1 (Williams)