Wales assistant Jonathan Humphreys has praised the work of head coach Warren Gatland after they became the first nation to reach the quarter-finals of the Rugby World Cup.

A  40-points-to-6 victory over Australia ensured they’ll be in the last-8.

It comes just six months after Wales finished second bottom in the Six Nations.

Humphreys explains how Gatland’s changed things.

Quins Prop Dillon Lewis is part of the 33 man Welsh squad