Atletico Madrid coach Diego Simeone insists his side will not be getting carried away following their 3-0 win at Austria Vienna.
Raul Garcia gave Atletico the perfect start to the Group G encounter with a goal in the eighth minute, before strikes from Diego Costa in the 20th and 53rd minutes sealed a comfortable victory for the La Liga outfit.
Costa's brace - his 11th and 12th goals of the season - means he is the fourth Atletico player to score twice in his first UEFA Champions League game, a feat matched by Simeone.
The victory left Simeone's side five points clear at the top of the group with three wins from three matches but afterwards, the coach insisted his team would continue to take things one game at a time following strong starts both in Europe and domestically.
"We cannot afford to move away from this game by game mentality," he said.
"We know the difficulties we will face in the UEFA Champions League and in La Liga.
"It was a very good first half for us in terms of how we interpreted the way in which we had to control the game and its rhythm.
"Positioning Raul (Garcia) behind Diego Costa gave us a lot of strength, and our full-backs were also excellent."
Costa, playing in his first Champions League game after serving a two-match suspension, was delighted with the impact he made.
"I felt good out on the pitch and was very happy to make my UEFA Champions League debut in such a manner," he said.
"We played a great game. Our way of thinking is to take things on a game by game basis, trying to reach our maximum level in each encounter."
|Coach: N. Bjelica|
for M. Stankovic 14'
for T. Jun 75'
for D. Royer 85'
|Tottenham deal for Son not complete, say Leverkusen|
|Tuchel thrilled with aggressive Dortmund display|
|Midtjylland 1 Southampton 0 (2-1 agg): Premier League side crash out|
|Borussia Dortmund 7 Odd 2 (11-5 agg): Reus hat-trick highlights hammering|
|Cudicini tips Mourinho to avoid Porto upset|
|Anything is possible with Neymar´s future - Belletti|
|Burnley bring in Barton|
|Bayern Munich v Bayer Leverkusen: Vidal putting friendships on hold|
|De Bruyne edges closer to City move after further Wolfsburg talks|
|Real Madrid v Real Betis: Benzema back as Real look to hit the goal trail|
|Barcelona v Malaga: Rosales hopes for another upset|
|West Brom hit out at Tottenham´s Berahino pursuit|
|Stoke City v West Brom: Pulis set for Britannia return|
|Tottenham v Everton: Pochettino´s men eye first win|
|Everton reject Stones´ transfer request|
|Messi named UEFA Player of the Year|
|Pocehttino quiet on Berahino bids|
|Real Madrid to meet PSG in Champions League, Barca drawn with Leverkusen|
|Bournemouth v Leicester City: Howe eager to entertain|
|Ranieri coy on Gray link|
|Newcastle United v Arsenal: Wenger hopes for sharper shooting|
|PSG snap up Kurzawa from Monaco|
|Aston Villa v Sunderland: Sinclair aims to replicate cup form|
|Grabban a silly boy - Neil|
|Chelsea v Crystal Palace: Pardew braced to face stronger champions|
|Manchester City v Watford: Flores heads to Etihad with confidence|
|Marseille loan Real Madrid youngster Lucas Silva|
|Howe surprised by Harte´s retirement|
|Liverpool v West Ham: History counts for nothing, says Bilic|
|Bolasie set for Palace comeback|
|De Bruyne to City not a done deal - Allofs|
|Sevilla complete Llorente swoop|
|Wenger supports video technology|
|Milan v Empoli: Zapata sets sights on ´must-win´ fixture|
|Watford boss Flores ´not happy´ with transfer situation|
|Balotelli: I am no longer a kid|
|Bilic has no issue with Valencia|
|Arsenal ´not close´ to any late deals|
|Balotelli finalises return to Milan on loan|
|West Ham confirm Nolan departure|
|Thiago signs new Bayern deal|
|Schmidt saddened as Son nears exit|
|CONCACAF Champions League Review: Sounders lose in Honduras|
|Van Gaal considered early Herrera substitution|
|MLS Review: Fire stun Red Bulls|
|Carroll nears West Ham return|
|Rodriguez hoping for England recall|
|Leverkusen can challenge best - Schmidt|
|Ozil defends United recruit Schweinsteiger|
|Sporting ´better over two legs´ - Jesus|
|Stoilov revels in historic Astana triumph|
|Pioli: Lazio not ready for Champions League|
|UEFA Champions League Review: Rooney nets treble and Astana make history|
|Everton to reject Stones´ transfer request - Martinez|
|Barnsley 3 Everton 5 (aet): Delightful Deulofeu spares blushes for Martinez´s men|
|Van Gaal lauds Rooney character|
|Rooney delighted to be back in the goals|
|Club Brugge 0 Manchester United 4 (1-7 agg): Rooney ends goal drought with hat-trick|
|Juve striker Llorente undergoing Sevilla medical|
|Blanc confirms imminent Kurzawa switch to PSG|
|AFC Champions League Review: Lima gives Al Ahli the edge, Jeonbuk Motors and Gamba Osaka draw|
|Wanyama out of Euro tie with stomach infection|
|Digne joins Roma on loan from PSG|
|Monaco agree deal for Real´s Coentrao|
|Wolves reject third Norwich bid for Afobe|
|Valencia clarifies West Ham criticism of injury treatment|
|O´Neill hands duo Northern Ireland recalls|
|Illarramendi makes Sociedad return|
|Arsenal a player away from dominance - NBA star Deng|
|Godin ´always wanted´ Atletico stay|
|Schalke reject Roma´s Kolasinac bid|
|Injured Allen omitted from Wales squad|
|Bellerin ready for Debuchy battle|
|Valencia lashes out at West Ham treatment|
|Van Dijk hints at Celtic exit|
|Everton legend Gray resigned to Stones exit|
|Negredo: Suffering is in the past|
|Commons and Gordon reject Deila critcism after Celtic defeat|
|Neil remains defiant on Bournemouth target Grabban|
|Happy Milner optimistic about Liverpool chances|
|CONCACAF Champions League Review: DC United, Saprissa preserve perfect records|
|Tomkins eyes West Ham recall|
|Di Maria, Pastore out of Argentina squad|
|Schmidt unfazed by Lazio injuries|
|Pique hits back at Barca critics|
|Hurt Traore a ´marked man´ - Sherwood|
|Wolves reject second bid for Norwich target Afobe|
|Pardew fears ´long term´ Jedinak injury|
|Hughes thrilled with Bojan return|
|Maccabi´s Europe feat ´the high of highs´ for Ben Haim|
|McClaren expecting big things from Thauvin|
|Lucescu calls for Shakhtar improvement in group stage|
|Watford will learn from loss - Flores|
|Nuno revels in Valencia´s Champions League qualification|
|Advocaat unhappy despite win|
|League Cup Review: Preston claim Watford scalp, Luton lose shoot-out to Stoke|
|UEFA Champions League Review: Valencia make history for Spain, Celtic dumped out|