Canyon Eisberg suffered a blow to their Tour Series title hopes as rivals Madison Genesis netted victory at Wembley Park.
However, Tim Elverson’s squad battled on bravely to retain the leaders’ jerseys ahead of the grand final in Salisbury on Thursday night.
Tom Pidcock clinched the individual win for Team Wiggins with Connor Swift runner-up for Madison, who placed all five riders inside the top 10.
Andrew Tennant and Charlie Tanfield survived in the main group, although the latter had to shrug off a crash on the final lap before crossing the line.
But a hat-trick of bike changes for James Lowsley-Williams inside the first half-hour had put the team under pressure.
It is clear the final round will prove decisive, with Madison now just one point adrift in the overall standings.
Canyon Eisberg must beat their rivals in Salisbury. Otherwise, if the teams finish level, Madison will win the series on countback (most round wins).
British circuit race champion Pidcock went on the attack early on under the Wembley arch but the Team Wiggins rider was soon brought back.
The catch prompted Tennant and Charles Page to clip off with Madison duo Richard Handley and Swift.
Unsurprisingly, JLT Condor were unhappy with the move and Ed Clancy was deployed to shut it down. He did so within a couple of laps.
Swift took the opening Eisberg sprint of the night as he and Handley put the hammer down again with Tennant in close attention.
The fierce pace was beginning to tell and after a dozen laps the front group had been decimated with just 13 riders remaining.
Madison had the whip hand with five men, while Elverson’s squad retained four. JLT were under the pump with only Clancy left.
Alex Paton, who was returning to action following illness, was the Canyon Eisberg rider who had been distanced. Although, he was fighting hard to get back on.
But the technical circuit, drying out after the day’s rain, was making life difficult as numbers up front continued to fluctuate.
A third bike change in the opening half-hour saw Lowsley-Williams lose touch before Swift rolled through the second Eisberg sprint of the night.
Madison were now firmly in control. And they attempted to drive home their advantage as Swift went clear alongside Pidcock.
Paton, now Canyon Eisberg’s fourth rider on the circuit, was more than a minute behind, giving Madison a sniff of regaining the series lead.
Tobyn Horton and ONE Pro’s Emils Liepins bridged to the leading pair as Swift completed a hat-trick of wins in the intermediate sprints.
Meanwhile, Tennant and Tanfield held firm in the chase group, which had been reduced to just seven men as the clock ticked down towards the hour mark.
The duo were still involved when the junction was made but with the race in pieces behind, it was anyone’s guess who was going to finish second to Madison on the night.
It was a case of deja vu as Swift and Pidcock rode clear again when the klaxon sounded for five laps to go.
And this time the move stuck as it quickly became apparent they would contest the individual victory under the Wembley arch.
Pidcock took the win, with Swift having to settle for second spot on the Brother fastest lap prize with a time of 1min 22.467sec on the 1.8km circuit.