Gareth O’Brien landed a long-range drop goal in the first period of extra time as the Leopards shocked their neighbours at the Brick Community Stadium after the first scoreless draw in the competition’s history.
It was also the first time Leigh had beaten the Warriors since their promotion back to the top flight in 2022 and their first victory at Wigan for 42 years.
Leigh coach Adrian Lam hailed his side’s achievement after opening the Betfred Super League season with a stunning 1-0 golden-point win over champions Wigan.
Lam, having included five new signings in his matchday squad, was also pleased with how his side came together after losing a raft of players in the close season.
He said: “It takes time to bring them together, so I wanted some indication they would turn up for each other.