Argentinean hooker Eusebio Guinazu will make his first Aviva Premiership start of the season when Bath Rugby visit Harlequins in Saturday's play-off decider.
The Pumas international - who replaces the injured Rob Webber and Ross Batty - has made just five league appearances this term, all off the bench.
Academy product Tom Dunn provides hooker cover on the bench after being cleared of a citing picked up for an incident while on loan at London Scottish earlier this season.
Guinazu's inclusion is the only change to the XV which started last Friday's 19-19 draw with Northampton Saints.
Winger Semesa Rokoduguni returns on the bench having missed that match to represent the Army against the Navy at Twickenham.
The Quins game comes too soon for flanker Francois Louw, who has been back in training this week after nearly two months out with an ankle injury.
For the home side, number eight Nick Easter will make his 232nd appearance and equal Ceri Jones' record for the highest number of professional appearances for Quins.
Easter starts in a forward pack which sees two changes to the one which beat Exeter Chiefs. Maurie Fa'asavalu starts at blindside flanker in place of Luke Wallace who picked up a knock last week.
George Robson returns to start in the second row and partners Charlie Matthews.
In the one change to the backline, Mike Brown starts at full-back.
Among the replacements is Will Collier, whio will look to make his first appearance since sustaining an injury in January's Heineken Cup match against the Scarlets.
Bath Rugby team to face Harlequins
15. Nick Abendanon
14. Anthony Watson
13. Jonathan Joseph
12. Ollie Devoto
11. Matt Banahan
10. George Ford
9. Micky Young
1. Paul James
2. Eusebio Guinazu
3. David Wilson
4. Stuart Hooper (c)
5. Dave Attwood
6. Carl Fearns
7. Guy Mercer
8. Leroy Houston
Replacements
16. Tom Dunn
17. Anthony Perenise
18. Juan Pablo Orlandi
19. Dominic Day
20. Alafoti Fa'osiliva
21. Peter Stringer
22. Gavin Henson
23. Semesa Rokoduguni
Harlequins team to face Bath Rugby
15. Mike Brown
14. Tom Williams
13. Tim Molenaar
12. Jordan Turner-Hall
11. Ugo Monye
10. Nick Evans
9. Danny Care
1. Joe Marler
2. Dave Ward
3. Kyle Sinckler
4. Charlie Matthews
5. George Robson
6. Maurie Fa'asavalu
7. Chris Robshaw (C)
8. Nick Easter
Replacements
16. Rob Buchanan
17. Mark Lambert
18. Will Collier
19. Nick Kennedy
20. Tom Guest
21. Karl Dickson
22. Ben Botica
23. Sam Smith
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