Conceding the early goal seemed to spark the Wellingtonians, who are notoriously poor across the Tasman, and they were duly rewarded when Brockie latched on to a Leo Bertos cross to draw the sides level mid-way through the first spell.
Brockie has a frustrating habit of drifting in and out of games but it's hard to deny his nose for goal and the All Whites utility has proven to be an inspired buy after he joined the Phoenix on a three-year deal from the Newcastle Jets at the start of the season.
Wellington enjoyed a power of possession throughout the rest of the first spell but as has been one of their major issues all season they failed to make use of the ball to find a go-ahead goal.
Both sides went to the sheds with a goal each to their credit but the game took a turn for the worse for the visitors almost immediately after the second half had begun.
Phoenix midfielder Vince Lia gave away a bizarre penalty when he inexplicably stuck his arm out and made contact with a Western Sydney cross, which gave Wanderers skipper Mark Bridge the chance to put the A-League newcomers back in to the lead.
Moss was given another chance to be a hero but he was unable to deny Bridge who ensured the Wanderers now have a five-point lead at the top of the A-League standings with three rounds to go as they banked their ninth straight win.
Brockie could have taken an outright lead in the golden boot race _ and drawn the sides level _ in the final minutes but his shot on the turn found the crossbar rather than the back of the net.
The Phoenix, who have already played their round 26 game as it clashes with upcoming World Cup qualifiers for the All Whites, meet Perth next weekend in Western Australia before they round out their disappointing campaign with a home outing against Melbourne Victory on March 31.
Western Sydney Wanderers 2 (Shinji Ono 7 pen, Mark Bridge 47 pen) Wellington Phoenix 1 (Jeremy Brockie 22) HT: 1-1