The Wests Tigers' have upset defending National Rugby League premiers Melbourne 22-4 at a rain-sodden Leichhardt Oval.
Young wingers Tim Simona and David Nofoaluma were outstanding in the treacherous conditions on Saturday night and were instrumental in three of the Tigers' four tries, with the former producing two game-changing long-distance runs.
It was a fourth win in their past five starts for the Tigers, who produced their best defensive display of the season as they kept the opposition to single figures for the first time this year.
The Penrith Panthers won their match over the St George-Illawarra Dragons 25-10.
