The Waratahs have named their team to play the Crusaders in Christchurch and have made three changes to the side that beat the Bulls.
Guildford broke his toe in Round Six and has been named in the number 23 jersey so he will be eased back in against his former team.
David Horwitz will start at inside centre after replacing Kurtley Beale.
Powerful lock, Will Skelton will reach a half century of games having played all 50 with the Waratahs.
The Waratahs meet the Crusaders at 7.35pm tomorrow.
Waratahs
1. Paddy Ryan
2. Tatafu Polota‑Nau
3. Tom Robertson
4. David Dennis
5. Will Skelton
6. Dean Mumm
7. Michael Hooper (C)
8. Jed Holloway
9. Nick Phipps
10. Bernard Foley
11. Rob Horne
12. David Horwitz
13. Israel Folau
14. Reece Robinson
15. Andrew Kellaway
Replacments:16. Angus Ta’avao , 17. Hugh Roach , 18. Jeremy Tilse , 19. Sam Lousi , 20. Wycliff Palu, 21. Matt Lucas , 22. Matt Carraro, 23. Zac Guildford
Source : Superxv.com