Borussia Dortmund coach Jurgen Klopp labelled his players 'wolves' after they fought to qualify for the UEFA Champions League quarter-finals.
Zenit St Petersburg defeated Dortmund 2-1 in Germany on Wednesday but the home side held on for a 5-4 aggregative triumph in the round of 16.
While Klopp was disappointed by the way his team defended their nervousness in the first half, the 46-year-old was thrilled to have reached the Champions League's last eight for the second year in a row.
"My lads deserve to be in the quarter-finals because they always fight like wolves," Klopp said.
"When you see who else is in the quarter-finals of the Champions League, then this is the creme de la creme.
"We stand for the second consecutive year in this round and I'm totally happy."
Zenit took the lead in the 16th minute thanks to Hulk's long-range strike before Sebastian Kehl's header dragged Dortmund level seven minutes before half-time.
Salomon Rondon struck the winner for the visitors after 72 minutes, but the Russian Premier League club could not find another goal to increase the pressure on their hosts.
Klopp hailed Zenit as 'a great team' but was frustrated how his side failed to utilise their Champions League experience from three consecutive campaigns to control the match effectively.
"You could sense a bit of tension and a degree of nervousness," Dortmund's boss said.
"After we scored the equaliser the match wasn't decided but we were calmer on the ball. We've got the experience of 20 or so Champions League matches, including a final, but we could have played a lot calmer in the first half."
Dortmund striker Robert Lewandowski warned his team-mates they will have to improve if they are to advance past the quarter-finals.
"This was not a perfect game by us. I do not know what it was," he said.
"Of course we are very happy about the quarter-finals.
"There is now waiting definitely an absolute top team for us. To beat them, we have to give 110 per cent and play much better than today."
|5||S. Kehl||38' 55'|
|Coach: J. Klopp|
for H. Mkhitaryan 69'
for M. Schmelzer 77'
for P. Aubameyang 90+1'
|Copa Sudamericana Preview: Boca Juniors, River Plate hold narrow leads|
|Uruguayan Primera Division Review: Racing go clear at top|
|Chilean Primera Division Review: President, coach clash doesn´t derail Colo Colo|
|Peruvian Primera Division Review: Melgar, Universitario remain undefeated|
|Brazilian Serie A Review: Sao Paulo beat leaders|
|Paraguayan Division Profesional Review: Nacional Asuncion win again|
|San Jose Earthquakes 1 Los Angeles Galaxy 1: Keane´s penalty miss proves costly|
|Milan progression encourages Inzaghi|
|Ligue 1 Review: Marseille revival continues as Lille stay unbeaten|
|La Liga Review: Valencia continue resurgence, Sevilla ignore goalkeeper crisis|
|Menez thrilled with Milan victory|
|Primeira Liga Review: Porto held at Guimaraes, Boavista claim first win|
|Serie A Review: Goals flow as Inter and Milan both win|
|Parma 4 Milan 5: Visitors triumph in nine-goal thriller|
|Galatasaray v Anderlecht: Unfancied pair meet in Turkey|
|Di Francesco: I would have gladly made 11 changes|
|Liga MX Review: America held by strugglers Universidad, Santos close in on leaders|
|Van Gaal focused on United trajectory|
|Borussia Dortmund v Arsenal: Familiar opponents renew rivalry|
|Championship Preview: Adams talks up Norwich, Wolves head to unbeaten Charlton|
|Bundesliga Review: Hamburg beaten again, Augsburg claim first points|
|Eredivisie Review: Cambuur humble rivals Groningen, Vitesse finally win|
|League Two Preview: Flitcroft urges Bury caution, Burton out to extend lead|
|Benfica v Zenit St. Petersburg: Battle of the high-fliers|
|Redknapp expected heavy United defeat|
|United can do much better, says Van Gaal|
|Benitez at a loss to explain Napoli defeat|
|Manchester United 4 QPR 0: Di Maria steals show on Falcao debut|
|League One Preview: Cotterill demands focus, Dickov bids to ease pressure|
|Monaco v Bayer Leverkusen: Hosts eye positive amid awful start|
|Mazzarri praises ´ideal´ Inter|
|Al Qadsia v Persipura: Kuwaitis seek place in third final|
|Liverpool v Ludogorets: Five-time winners back in the Champions League|
|Real Madrid v Basel: Break from La Liga woes for Ancelotti´s men|
|Inter 7 Sassuolo 0: Icardi hits hat-trick in rout|
|Nottingham Forest 1 Derby County 1: Scrambled equaliser earns visitors a point|
|CSL Review: Henan drop into bottom two after last-gasp equaliser|
|Juventus v Malmo: Allegri´s men aiming to crack Europe|
|Olympiacos v Atletico Madrid: Simeone´s men on crest of a wave|
|K. League Review: Top two earn narrow victories, Sangju Sangmu end winless run|
|Badstuber requires surgery on thigh injury|
|Godin: Our mentality remains|
|Bruce slams ´disrespectful´ Newcastle speculation|
|Pogba confirms Juve talks|
|Gotze expecting improvement at Bayern|
|Mancini interested in Portugal role|
|I was never close to United move - Muller|
|Welbeck impresses Wenger with debut display|
|Mourinho wary of Euro group rivals|
|Rio Ferdinand will never forgive ´biggest idiot´ Terry|
|MLS Review: New England win again, New York held|
|Erbil v Kitchee: Belencoso the key for Molina´s men|
|Al Hilal v Al Ain: Dalic happy with preparation|
|CONCACAF Champions League Preview: In-form Red Bulls travel to Canada|
|Casillas accepts fans´ criticism|
|Primeira Liga Review: Sporting held again, Rio Ave back to summit|
|La Liga Review: Atletico claim bragging rights, Neymar inspires Barca|
|Simeone hails impact of substitutes|
|Serie A Review: Juventus and Roma win ahead of Champions League action|
|Ancelotti vows to ´fix´ Real season|
|Allegri delights in ´special´ home debut|
|Ligue 1 Review: PSG stutter, Saint-Etienne respond|
|Eredivisie Review: AZ lose amid Van Basten confusion, Zwolle halt PSV run|
|Hummels to return to training|
|Hummels to return to training|
|Rodgers to keep faith with new faces|
|Pepe: Real need fans on side|
|Juventus 2 Udinese 0: Tevez and Marchisio seal the points|
|Lambert delighted with tactically terrific Villa|
|Real Madrid 1 Atletico Madrid 2: Arda strike settles derby|
|Bundesliga Review: Kagawa nets on return, Monchengladbach put pressure on Keller|
|Rodgers points to Liverpool tempo trouble|
|Scottish Premiership Review: McIntyre loses on Ross County bow|
|Messi is the best, declare Luis Enrique and Neymar|
|Senderos and Agbonlahor revel in Villa´s Anfield resilience|
|Blanc: We should have settled for 1-0|
|Blanc: We should have settled for 1-0|
|Kagawa: I had goosebumps the entire game|
|League Two Review: Burton extend lead as trio remain winless|
|Lukaku leaves Martinez elated|
|Liverpool 0 Aston Villa 1: Agbonlahor strikes as Villa revel on Merseyside again|
|Irvine rues individual errors|
|Pearson: Cambiasso´s game management is exceptional|
|Koeman: Southampton can improve on Newcastle demolition|
|Hughes eager to restore home comforts|
|Monk positive despite Chelsea defeat|
|Pardew defiant despite heavy defeat|
|League One Review: Bristol City go top, Dons hit five|
|Mourinho tempers Costa expectations|
|Ings hamstring injury to be assessed - Dyche|
|Championship Review: Fulham lose again, Norwich move into second|
|Guardiola hopeful over Badstuber injury|
|Poyet revels in unlikely draw|
|We deserved more - Pochettino|
|Rennes 1 Paris Saint-Germain 1: Ntep clinches point for hosts|
|Warnock hails Speroni after penalty save|
|Barcelona 2 Athletic Bilbao 0: Neymar double makes the difference|
|Southampton 4 Newcastle United 0: Pelle piles pressure on Pardew|
|West Brom 0 Everton 2: Lukaku and Mirallas fire visitors to victory|
|Sunderland 2 Tottenham 2: Kane error ensures spoils are shared|
|Stoke City 0 Leicester City 1: Ulloa continues hot streak in maiden win|
|Chelsea 4 Swansea City 2: Imperious Costa hits three as hosts come from behind|
|Crystal Palace 0 Burnley 0: Arfield miss costs visitors|
|Borussia Dortmund 3 Freiburg 1: Kagawa stars on Dortmund return|
|Bayern Munich 2 Stuttgart 0: Ribery on target in Bayern win|
|Wenger laments poor defending and Debuchy injury|
|Pellegrini fumes at ref Clattenburg|
|Arsenal 2 Manchester City 2: Demichelis header rescues point for visitors|
|J.League Review: Urawa Reds stretch lead as rivals slip up|
|Hull City v West Ham: Hernandez to wait for debut|
|Hughes yet to hold Stoke talks|
|More Britons should play abroad, says Bale|
|Toronto president not expecting Defoe to return|
|I knew I had to change - Sterling|
|MLS Review: Sporting, Sounders claim wins|
|Ferdinand: United shirked farewell|
|Godin: Too difficult to leave Atletico|
|Pellegrini to rotate goalkeepers|
|Atletico not violent - Simeone|
|No Juve injury crisis - Allegri|