London Welsh make seven changes for Friday’s Greene King IPA Championship fixture with Yorkshire Carnegie at Headingley Carnegie, kick off 8pm.
From the side which overturned a 22-point deficit to stun Cardiff Blues Premiership Select 33-29 in the British & Irish Cup, into the Welsh starting XV for Friday come Darryl Marfo, Ben Pienaar, Kieran Murphy, Seb Jewell, Chris Elder, Nic Reynolds and Rob Lewis.
In the forwards, Darryl Marfo comes in at loosehead for Ricky Reeves, who has been ruled out with a bug. There's a double change in the back row with Ben Pienaar, who makes his 50th appearance for London Welsh, replacing the injured Richard Thorpe at blindside flanker, and Kieran Murphy named at Number 8 in place of the injured Will Skuse.
In the backs, Seb Jewell is named at full back, with Martyn Thomas another to be ruled out through injury, and captains the side. Chis Elder returns on the wing and Nic Reynolds at outside centre, with Rob Lewis named at scrum half.
On the bench, Josh Drauniniu could make his first appearance since Welsh's fixture at Rotherham Titans on October 24.
London Welsh head coach Rowland Phillips said: "We had a positive performance at Pirates and we had an outstanding last 20 minutes against the Blues, so the general trend is one of improvement and there's been a lot of positive energy off the back of it.
"If there were any questions over the character within this group, they were certainly put to bed in those final 20 minutes. The Blues game allowed us to grow some belief and showed that when we're accurate and deliver our structures they can be very effective.
"In the last two weeks a lot players who hadn't played much rugby got an opportunity and certainly put their hands up, and we've had to respect that with regards to our team for Friday. We faced a very healthy selection headache and that can only be good for the club.
"Yorkshire at Headingley is always going to be a tough test. They're going very well and it's going to be a big challenge, but we need to believe in ourselves.
"We need to start Friday's game as we finished off against the Blues, and play without fear. We need to deliver our structures and the things we've talked about, and show that we're a team that's ready to front up.”
London Welsh's previous visit to Headingley came in May 2014 in the 2nd leg of their Championship semi-final. The Exiles lost 38-31, but went on to win the two-legged tie on aggregate. Welsh's last win at Headingley came earlier that season, in November 2013, when they came away with a 31-24 victory.
London Welsh: 15. Seb Jewell (C), 14. Chris Elder, 13. Nic Reynolds, 12. Thretton Palamo*, 11. Guy Armitage, 10. Olly Barkley*, 9. Rob Lewis, 1. Darryl Marfo, 2. Nathan Morris, 3. Ben Cooper, 4. Brendon Snyman, 5. Ben West, 6. Ben Pienaar, 7. Jesse Liston, 8. Kieran Murphy.
Replacements: 16. Koree Britton, 17. Nathan Trevett, 18. Eddie Aholelei*, 19. Josh McNally, 20. Darren Waters, 21. Ryan Glynn, 22. Joh Drauniniu.
* Denotes full international