Real Madrid crashed to their biggest-ever home defeat in Europe after they were thrashed 3-0 by CSKA Moscow on Wednesday.
CSKA completed a famous double over Madrid, becoming the first time to beat them home and away in a Champions League group since Liverpool in 2009, although their feat wasn't enough for a Europa League berth.
Los Blancos sewed up Group G with 2-0 win at Roma last time out, so Vinicius Jr finally got a chance to impress in their attack, alongside fellow youngsters Jesus Vallejo, Javi Sanchez, Marcos Llorente and Federico Valverde.
However, Thibaut Courtois stayed in goal as Santiago Solari opted against rotation between the sticks, with the Belgian once more preferred to Keylor Navas.
CSKA, meanwhile, couldn’t qualify for the knockouts but were competing with Viktoria Plzen for access to the Europa League round of 32 and did beat Madrid 1-0 earlier in the season.
Madrid controlled the opening stages and Vinicius rifled a left-footed shot at goal, which Igor Akinfeev got a strong hand to, before Marco Asensio hit the bar.
Akinfeev then tipped over another Asensio strike, yet CSKA took the lead against the run of play when Fedor Chalov curled a lovely finish past Thibaut Courtois.
The hosts quickly doubled up through Georgi Shchennikov, who tapped in the rebound after Thibaut Courtois had saved a Mario Fernandes shot in the box.
Rodrigo Becao almost gifted Madrid a goal back, the CSKA defender miscommunicating with Akinfeev and nearly looping a header into the back of the Russian’s net.
Gareth Bale came on for the second half, but the Welshman took a sore one to his right ankle and struggled to make an impact.
Arnor Sigurdsson rounded off the rout, although the goal was quickly followed by Viktoria Plzen snatching third place in the group after they beat Roma 2-1.
Real Madrid 0-3 CSKA Moscow
Chalov 37, Shchennikov 43, Sigurdsson 73
Real Madrid: Courtois; Odriozola, Vallejo, Javi Sanchez, Marcelo (Carvajal 74); Marcos Llorente (Kroos 58), Valverde; Asensio, Isco, Vinicius; Benzema (Bale 46)
CSKA Moscow: Akinfeev; Nababkin, Becao, Magnusson; Bistrovic, Vlasic, Shchennikov; Oblyakov (Kuchaev 89), Chalov (Abel Hernandez 84), Sigurdsson (Nishimura 90)
Referee: Soares Dias (POR)