Sam Skinner and Matt Fagerson have been added to Scotland's Six Nations squad for the rest of the tournament.
Bordeaux-Begles scored two tries in the last eight minutes to earn a 37-19 win over Top 14 rival Lyon that moved it above its opponent to top the table.
Lyon was grateful to Xavier Chiocci for a late try as it scraped past Agen, avoiding an upset in Top 14 action on Sunday (AEDT).
Lyon bounced back from a miserable run of form to thump Bayonne 52-9 and move into first place in the Top 14 table.
Bordeaux Begles will have the chance to move into first place in Top 14 after leader Lyon slipped up at Castres, while Handre Pollard had a difficult debut for Montpellier.
Lyon's lead at the Top 14 summit was reduced to just one point as they were comprehensively beaten 33-8 by Montpellier on Saturday.