Following a goalmouth melee, the brother of Adam Milne - the Black Caps strike bowler - pounced on a ball to push it into the net after goalkeeper Damian Hirst failed to control the ball from a cornerkick for Bay United to extend their lead to 2-0.
The way premiership golden-boot contender Tinsley celebrated his second goal-scoring pass you could have been mistaken for thinking the Englishman had scored but his celebrations were well deserved.
The third 30-second moment came during the three minutes of added time when Canadian benchboy Troy Pennycooke-Morgan showed hunger in latching on to a through ball to beat keeper Hirst for the final nail in the coffin. That 3-1 lead was inevitable, considering the visitors had pushed everyone to play catch-up footy in search of an equaliser.
Bay skipper Ross Haviland acknowledged the Wanderers' prowess, putting it down to their commitment to train numerous times a week in a bid to build a respectable level of cohesiveness.
"They have a good style of possession but, as I said, we're still growing as a team," Haviland said.
But the Adam Mitchell-captained Wanderers were often their own worst enemies.
In the 35th minute, striker Andre de Jong got ultra-cute in the 18m box as a goal went begging and could have changed the complexion of the game.
Having beaten Bay goalkeeper Joshua Hill twice at point-blank range as the parochial home fans held their collective breath, the striker showed youth will always be work in progress as he finally shot wide from inside the 5m box.
The Wanderers' only goal came in the 81st minute when Te Atawhai Wihongi-Hudson drove a ball from about 25m out to catch the entire Bay defence napping to trail 2-1.
Haviland said the Bay's first goal was a boost, "lady luck" favouring them for a change.
"We've had a lot of opportunities but it just doesn't go in but today it showed we had a little bit of luck."
Before playing Waitakere United, who had a 3-1 win over Southern United yesterday, in a fortnight he said the Bay needed to keep the ball more.
"When we get the ball we tend to panic a lot in the defensive third. We need to work on our finishing as well even though we did well today."
This weekend's bye, he felt, would be a good time for his men to attend to niggles and rejuvenate.
The Bay had their share of agonising moments, striker Saul Halpin botched a goal-scoring opportunity under no pressure from a gimme position. He leaned back to curl the shot over the crossbar rather than deftly placing it past a goalkeeper who looked wobbly throughout the game.
With a bottle-neck developing in the middle of the table, Haviland said every point was vital.
He thanked the crowd at Bluewater Stadium yesterday, urging them to return to fuel their campaign.
Wanderers coach Darren Bazeley wasn't going to play the "younger boys" card this time.
"I expect us to be better, actually, as well as be professional and I expect us to know and do our jobs," Bazeley said while being happy with long spells of dominance but ruing their lack of killer instincts on the final ball.
"We weren't strong enough to take our chances when they came along and we were sloppy at times in clearing the ball from dangerous areas."
In the upset of the weekend, WaiBOP United beat O-League campaigners Team Wellington 2-1.
