English-born Melbourne young gun Gareth Widdop clinched the Toyota Cup grand final for the Storm with a 74th minute try and pressure conversion, his side downing the Wests Tigers 24-22 on Sunday.

Widdop finger-nailed a late grubber - his second try of the match - to draw his side level at 22-22 before calmly potting the conversion and delivering the second version of the national under-20s competition to Melbourne.

The Tigers had looked to be coming home with a wet sail before Widdop, who missed three first-half conversions, made the difference in a match where the lead changed five times.

The Storm had also been denied three times in the first half, twice with players held up, but scored tries through winger Matt Duffie, lock Billy Rogers, Gareth Widdop and centre Justin O'Neill.

[1] Melbourne Storm 24 (Gareth Widdop 2, Matt Duffie, Billy Rogers, Justin O'Neill tries; Gareth Widdop 2/5 goals) Wests Tigers 22 (Jake Mullaney 2, Rhys Curran, Robert Lui tries; Jake Mullaney 3/4 goals) Half-Time: Melbourne 18-10 Jack Gibson Medal: Luke Kelly The winner of the award is decided by the most votes during the year as decided by the referee of each game on a 3-2-1 basis for each game played throughout the regular season.