Former All Black Zac Guildford has said the Waratahs have huge potential.

Guildford made his return to Super Rugby for the Waratahs last Saturday.

The 27-year-old set up a try in his first Super Rugby game since 2014.

The Waratahs beat the Reds 30-10.

The Brumbies will play the Waratahs at 8.40pm this Friday.

At 6.35pm, the Crusaders will face the Blues.