A mammoth late penalty from Scott Spedding snatched a 24-21 win for Clermont Auvergne to extend Saracens' losing streak to seven matches, and Elliot Daly starred as Wasps ended La Rochelle's 100 per cent European Champions Cup record.
Injury-hit Sarries were subjected to a 46-14 mauling by the Top 14 champions in a Pool 2 clash rearranged for Monday due to snow, but looked much more like the side that has won back-to-back Champions Cup titles at a raucous Stade Marcel-Michelin on Sunday.
A superb early Ben Spencer solo try and eight points from the boot of Owen Farrell gave fired-up Sarries a 13-0 lead inside 10 minutes, but three Morgan Parra penalties and one from Spedding reduced the deficit to just a point at half-time.
Another two successful Parra kicks from the tee made it advantage Clermont, who lost wing Alivereti Raka - scorer of a quickfire hat-trick at Allianz Park six days earlier - and France centre Damian Penaud to injury in the first half.
There were howls of derision from the Clermont faithful when Nick Abendanon was shown a yellow card for taking a man out in the air after another penalty from Farrell, who then fed Alex Lozowski to put Sarries 21-18 to the good 17 minutes from time.
Farrell failed to convert as whistles reverberated around the stadium and Parra levelled a classic contest with Juan Figallo in the bin, Spedding providing the final twist by stepping up to hold his nerve under pressure to put Clermont seven points clear of Sarries.
Ospreys moved above the holders into second spot with a 32-15 bonus-point win in Northampton Saints' first match since director of rugby Jim Mallinder's sacking, Rhys Webb claiming a double at the Liberty Stadium.
Top 14 leaders La Rochelle remain top of Pool 1, but Wasps breathed new life into their bid to qualify for the quarter-finals with a 21-3 success at the Ricoh Arena inspired by Daly.
The versatile England international scored a try in each half before limping off and Tom Cruse also barged his way over in a richly deserved victory which put Wasps five points behind their opponents, who hammered the Premiership side 49-29 last weekend.
Ian Keatley booted 20 points and CJ Stander scored a second-half try to give Munster a 25-16 win to go four points clear at the top of a tight Pool 4, their first success at Leicester Tigers in 11 years spoiling Manu Tuilagi's comeback and leaving the Premiership side facing elimination.
|Rose scores record-equalling 64 to jump into Open contention|
|Moreno hails Liverpool´s recruitment drive as ´top, top players´ arrive|
|AC Milan elect new board with CEO Fassone out|
|Sri Lanka grind sorry South Africa into the Colombo dirt|
|Mina ready to reject offers for Barcelona stay|
|Guardiola tells Sane to use World Cup snub as motivation|
|Golovin´s ex-team-mate Chepchugov drops hint over Chelsea move|
|Reed & Rose make early charges on Carnoustie ´moving day´|
|Sancho ´had a point to prove´ in Dortmund´s win over Manchester City|
|Li hits back at AC Milan owners Elliott as bitter split continues|
|Crusaders cruise past Sharks to book Hurricanes semi-final|
|Rabiot would be a great signing for Barcelona – Xavi|
|JaVale McGee: Lakers are going to be ´one of the most fun teams ever´|
|Dolphins owner Ross: National anthem policy a ´placeholder´|
|Boga leaves Chelsea for Sassuolo|
|Schurrle in talks to leave Borussia Dortmund|
|Guardiola happy with Mahrez and Man City despite loss|
|Dodgers top Brewers in Machado´s debut|
|Raptors GM apologises to DeRozan after Spurs trade|
|Manchester City 0 Borussia Dortmund 1: Gotze spoils Mahrez´s debut in ICC opener|
|United fans keeping De Gea at Old Trafford – Herrera|
|Keita: I turned down Barca and Bayern for Liverpool|
|Merritt stays ahead as rain halts Barbasol Championship|
|Roma had to sell Alisson to Liverpool, says Totti|
|Donald Trump: Kneeling players should be suspended without pay|
|Cardinals´ Carpenter makes history|
|Nationals pair Strasburg, Zimmerman activated from DL|
|Premier League-linked Plattenhardt feels at home at Hertha|
|Johnson expecting tough Granollers challenge|
|Good Luck at last! Colts quarterback fit for training camp|
|Haase humbles Rublev as Cecchinato charges on|
|Benzema hits back at ´crazy´ De Laurentiis over age jibe|
|Leeds Rhinos finally end winless streak in Super League|
|No freaky Friday for Spieth as he bounces back in round two|
|Double boost for Bouchard in Gstaad|
|Iconic Ronaldo to raise Serie A level - Roma´s Hamm|
|Brighton birthday boy March renews contract|
|Lamela hoping injuries are behind him after signing Tottenham extension|
|Where will I get my massage? - Roma´s Pallotta mocks UEFA ban|
|Rashid struck by Lightning amid speculation over Test recall|
|Major misses a mixed blessing for Fowler and Kuchar|
|Fleetwood, McIlroy and Spieth bare teeth as Kisner and Johnson lead|
|The Open 2018 diary: Fleetwood´s swinging in the rain, but it´s a slog for McIlroy|
|Fees agreed as Fabri closes in on Fulham move|
|Neymar and Mbappe have a very good relationship, claims PSG president|
|Boufal joins Celta Vigo on loan from Southampton|
|Leicester sign Ward from Liverpool amid Schmeichel speculation|
|Kisner philosophical after run-in with the Barry Burn|
|Gattuso unsure of Bonucci future|
|Verdasco, Gasquet advance but Ruud´s run is over in Bastad|
|James to remain at Bayern Munich, says Rummenigge|
|Texans QB Watson expects to be fit for training camp|
|Torpedo Moscow deny cancelling player´s contract over racist abuse|
|Napoli decry Cavani, Di Maria rumours as fake news|
|Kisner feels the Burn, Spieth on the surge|
|Woods: I could have cleaned up my round|
|Lille swoop for free agent Fonte|
|Sagan completes hat-trick after bunch sprint|
|´Amateur´ DFB needs Lahm´s help - Rummenigge|
|Horner expects Ricciardo new deal ´pretty quickly´|
|Diakhaby swaps Monaco for Huddersfield|
|Tottenham´s Lamela signs to 2022|
|Atletico´s Rodrigo excited to wear Simeone´s 14|
|F1 Raceweek: Red Bulls steal show from Mercedes but Ricciardo to start from back|
|Fakhar hits historic double hundred as Pakistan thrash Zimbabwe|
|Roma president Pallotta hit with three-month UEFA suspension|
|Hamburg extend contract of coveted youngster Jann-Fiete Arp|
|Steady start for Kisner as Woods endures mixed day at Carnoustie|
|Zach Johnson: Dustin comparisons are unfair|
|Neymar backs Tite for Brazil despite World Cup failure|