Our referee for this game is Wales' Adam Jones. He leads an all-Welsh contingent, with Tom Spurrier and Simon Rees as the assistant referees. The TMO is Sean Brickell.
The Lions have had to contend with a few injuries in the build-up, as flyhalf Jordan Hendrikse and flank Ruan Venter have been ruled out. As a result, Gianni Lombard and Jaco Kriel are brought into the starting lineup. There are potential debuts off the bench for former Springbok Sevens star JC Pretorius and young loosehead prop Rhynardt Rijnsburger.
Lions: 15. Andries Coetzee, 14. Quan Horn, 13. Henco van Wyk, 12. Marius Louw (c), 11. Edwill van der Merwe, 10. Gianni Lombard, 9. Morné van den Berg, 1. JP Smith, 2. PJ Botha, 3. Asenathi Ntlabakanye, 4. Willem Alberts, 5. Darrian Landsberg, 6. Jaco Kriel, 7. Emile van Heerden, 8. Emmanuel Tshituka.
16. Michael van Vuuren, 17. Rhynardt Rijnsburger, 18. Ruan Smith, 19. Ruhan Straeuli, 20. Sangweni Sibusiso, 21. JC Pretorius, 22. André Warner, 23. Manny Rass.
Stade Francais have named a vastly changed side from the one that lost to the Lions in Johannesburg. An all new front row features Springbok tighthead prop Vincent Koch. In the backline, South African scrumhalf James Hall is one of only two survivors from the game in South Africa, the other being wing Nadir Megdoud.
Stade Francais: 15. Kylan Hamdaoui, 14. Nadir Megdoud, 13. Theo Dachary, 12. Alex Arrate, 11. Stephane Ahmed, 10. Joris Segonds, 9. James Hall, 1. Moses Alo Emile, 2. Lucas Peyresblanques, 3. Vincent Koch, 4. Nathan Huguen, 5. Sitaleki Timani, 6. Julien Ory, 7. Mathieu Hirigoyen, 8. Ryan Chapuis (c).
16. Laurent Panis, 17. Vasil Kakovin, 18. Paul Alo Emile, 19. Marcos Kremer, 20. Juan Martin Scelzo, 21. Paolo Odogwu, 22. Arthur Coville, 23. Pienasi Dakuwaqa.
The Lions won the previous meeting against Stade in Johannesburg in December, claiming a 30-12 victory. However, the South African side has since lost three games on the trot.
Both of these teams have won one of their opening two pool fixtures, but the Lions sit in a superior second place in Pool B with eight points. Stade Francais are seventh with four points.
Hello and welcome to our coverage of the Challenge Cup match between Stade Francais and the Lions from the Stade Jean Bouin in Paris.
KICK-OFF! 0-0. The Lions get this clash in a rainy Paris underway.
The Lions hold the ball up and win a penalty from the subsequent scrum. Quan Horn opts to kick for touch.
An early chance goes wasted for the Lions as Morne van der Berg knocks the ball on metres from a tryline, after a wonderful move from the lineout.
It's a scrappy start as both sides mishandle the ball in midfield, resulting in a scrum to the hosts.
The Lions win a penalty for offsides and Gianni Lombard opts to go for goal. However, his attempt drifts wide.
Another penalty goes the way of the visitors, this time for a high tackle. Lombard kicks for touch to put the Lions within striking distance.
The Lions come close again as Van der Berg and Henco van Wyk engineer a wonderful linebreak down the left wing. After a couple of forward carries, JP Smith is held up over the tryline. The Lions had penalty advantage and opt for touch.
TRY, LIONS, TSHITUKA! 0-5. It's third time lucky for the visitors, who form a powerful maul to put Emmanuel Tshituka over for the game's first score.
CONVERSION, LIONS, LOMBARD! 0-7. After missing his first attempt, Lombard nails the conversion from the touchline. It's a great start for the Lions in Paris.
Stade Francais start to build some pressure with the ball from broken play and win a penalty at the breakdown. The hosts decide to kick for the lineout.
The Lions see off the first bit of pressure in their own 22, forcing the knock-on, before Andries Coetzee clears upfield from the scrum.
Stade Francais try to build pressure through their forwards, but are struggling to generate any fast breakdown ball. James Hall is eventually forced to kick the ball away, before the home side concedes a penalty for obstruction, much to the displeasure of the home supporters.
It's a warning for Stade Francais as the hosts concede another penalty in their 22. The Lions have the opportunity to stretch their lead through Lombard.
It's a rushed attempt from Lombard, who skews his kick badly from straight in front on the 22-metre line. That's a big let off for Stade Francais.
Stade Francais have the opportunity to punish the Lions from a scrum outside the visitors' 22. However, another knock on hands possession back to the Lions.
The Lions win a penalty from the scrum. Coetzee kicks to put the visitors on the opposition 10-metre line.
YELLOW CARD! Stade Francais lose inside centre Alex Arrate to the sin bin for consecutive penalties.
The Lions waste a late opportunity to score after building good pressure in Stade's 22. Willem Alberts forces an offload to Morne van den Berg, who knocks the ball on.
HALF TIME! 0-7. The Lions will take a narrow lead into the break after a very low-quality first half in Paris. Both sides have struggled to hold the ball in wet conditions, but the Lions have done better to build pressure through phases. Unfortunately for the visitors, they have often forced the offload just when they get into good attacking positions. A youthful Stade side hasn't carried much of a threat, but will be happy to only be seven points behind.
KICK OFF! 0-7. Stade Francais get the second half of this Challenge Cup clash underway. The home side was decidedly poor in the first half, but the game is still there to be won. Can they come from behind, or will it be the Lions celebrating victory in Paris?
It's a positive start to the second half for Stade, as the home side wins an early offsides penalty. Segonds kicks for touch inside the 22.
Arrate is back on for Stade after his period in the sin bin. The hosts didn't concede a point while he was off.
It's been all Stade at the start of the second half, as the Parisians win another penalty for offsides. This time, the decision is to go for poles.
PENALTY, STADE FRANCAIS, SEGONDS! 3-7. Segonds slots his attempt to get Stade on the board and ensure they capitalise on their positive start to the second half.
YELLOW CARD! The Lions are down to 14 men after Gianni Lombard is sent to the sin bin for taking a player out in the air.
Stade Francais are seemingly set to score from a powerful driving maul, but the Lions do enough to hold the ball up and enforce the goal-line drop-out.
YELLOW CARD! It's a yellow card, but not to Willem Alberts. Instead, JP Smith is sent to the sin bin after coming in and making head contact as an assisting tackler. The Lions are down to 13 men.
There's a TMO review of a tackle by Lions lock Willem Alberts.
PENALTY, STADE FRANCAIS, SEGONDS! 6-7. Segonds converts the subsequent penalty to bring Stade to within a couple of points of the lead.
Stade force a knock-on from the Lions and smash the subsequent scrum backwards to win a penalty. Segonds can give his side the lead with an attempt at poles.
Unfortunately for Stade, Segonds sends his penalty attempt wide.
TRY, STADE FRANCAIS, PANIS! 11-7. Stade work the ball and win another penalty. Their decision to opt for touch is rewarded as replacement hooker Panis goes over to give the hosts the lead for the first time in this match.
Stade's momentum continues as the hosts force a scrum near the Lions tryline and win another penalty.
PENALTY, STADE FRANCAIS, SEGONDS! 14-7. Stade extend their lead through Segonds' boot.
The Lions see off a maul near their tryline and manage to win the ball back and clear.
The Lions have a good attacking opportunity from a scrum on the halfway line and work Edwill van der Merwe into a half-break.
Stade Francais win a scrum near the Lions' tryline after Andries Coetzee loses the ball in the air.
After taking the ball through a number of phases, Stade win a penalty for offsides. Replacement Coville will try to take the Lions out of losing bonus point territory with a penalty.
PENALTY, STADE FRANCAIS, COVILLE! 17-7. Coville converts from in front of the posts to take Stade to a 10-point lead.
FULL TIME! 17-7. Stade Francais have come from behind to claim a well deserved victory. After struggling in the first half, the hosts were utterly dominant in the second and managed the conditions excellently. The Lions, meanwhile, hardly threatened Stade's tryline after half-time and were let down by some poor discipline.