Real Madrid coach Carlo Ancelotti believes 'small mistakes' cost his side in their 4-3 loss to Barcelona on Sunday.
A pair of second-half penalties from Lionel Messi, which completed his hat-trick, helped Barca fight from 3-2 down in the El Clasico at the Santiago Bernabeu.
Ancelotti, who felt his side deserved to take something out of the encounter, said errors were the difference between the two teams.
"The league race is still open. We need an immediate reaction," the Italian told a news conference.
"I've said it many times – the league will be decided in the last match. We have to continue fighting. We need to react.
"I haven't spoken to the players about the match yet. We committed small mistakes and that's why we lost.
"The team is ready to get up and move on. We have to be satisfied with how we played."
Karim Benzema's first-half brace had put Real ahead after Andres Iniesta opened the scoring on seven minutes.
Messi struck for the first time just before half-time but Cristiano Ronaldo restored Real's lead with a controversial penalty on 55 minutes.
But Messi delivered from the spot twice in 20 minutes as Sergio Ramos was sent off, putting Barca to within a point of top spot but still behind Atletico Madrid and Real (70 points each).
Ancelotti refused to criticise referee Alberto Undiano, instead focusing on his team's mistakes.
"It's difficult for me to comment on the referee's decisions," he said
"It's true that Messi scored three goals but any mistakes against a player of his quality will always hurt you.
"We have nine matches left. It will be all intense. Every game will be decisive."
Ancelotti is eager for his men to move on from the defeat with a tough clash against fifth-placed Sevilla to come on Wednesday.
"We have improved a lot, the team have showed their quality and proved it in this match," he said.
"It was a good game but we now have to forget about it quickly. Our next match is important."
|22||Á. di María||35'|
|7||Cristiano Ronaldo||55' 86'|
|9||K. Benzema||20' 24'|
|Coach: C. Ancelotti|
for K. Benzema 66'
for Á. di María 85'
for L. Modrić 90'
|UEFA Champions League Review: Ajax spurn two-goal lead at 10-man Rapid|
|Sunderland´s struggles continue as Doncaster cruise to win|
|Mahrez and Nugent on target in Leicester win|
|Mitrovic tastes debut defeat for Newcastle|
|Celtic 1 Qarabag 0: Boyata snatches crucial win|
|Jablonec 0 Copenhagen 1: Verbic cracker gives Danes the edge|
|Norwich sign Wisdom on loan from Liverpool|
|UEFA Europa League Preview: Koeman plays down importance of Vitesse links|
|Schneiderlin keen to learn from experienced duo|
|Mandzukic´s maiden Juventus goal seals win in Poland|
|Fofana completes Bastia loan|
|Deila delighted that Gordon pledges future to Celtic|
|Grenier ruled out for four months|
|Rooney: United squad ready for title challenge|
|Messi and Neymar available for start of season|
|Szczesny seals Roma switch|
|Benitez cools Mourinho war of words|
|Filipe Luis vows to win back Atletico fans|
|Besiktas in negotiations over Gomez switch|
|Kishna seals Lazio switch|
|Diaby completes Marseille move|
|Platini is bad for FIFA - Prince Ali|
|Bilic keen to make further additions|
|Brady makes Norwich move|
|Southampton complete Caulker loan|
|Rummenigge feels Muller ´will never leave´ Bayern|
|Platini to stand in FIFA presidential election|
|Howedes to remain Schalke skipper|
|Albion sign Hull defender Chester|
|Lucescu defends Fred selection amid doping allegations|
|Fabregas still in love with Arsenal|
|Luis Enrique ´happy´ with Barca´s US trip|
|Mourinho optimistic over Cahill and Costa|
|River owe Tigres´ Esqueda - Mercado|
|Van Gaal expecting big season from Shaw|
|Begovic keen to challenge Courtois|
|Mourinho launches attack on Benitez|
|CONMEBOL ´knocked on a lot of doors´ to keep half-spot - president|
|America 0 Benfica 0 (3-4 on penalties): Primeira Liga champions finally win|
|Napoli striker Higuain ´untouchable´ - Gabbiadini|
|Arsenal´s friendly form will boost confidence - Wenger|
|Nagatomo-Melo swap possible, says agent|
|Chelsea 2 Barcelona 2 (4-2 on penalties): Courtois stars for Premier League champions|
|Eriksen calls for ruthless Spurs|
|Pulis praises Berahino attitude|
|Alderweireld confident of top-four finish|
|Villa ready for tough Spurs clash|
|West Ham edge win on Carrow Road anniversary|
|Kozak scores twice as Villa draw at Wolves|
|Stanislas brace leads Bournemouth past Yeovil|
|Watford slip to friendly defeat at Cardiff|
|Lukaku injury sours Everton win at Dundee|
|UEFA Champions League Review: Fenerbahce draw blank as Monaco impress|
|West Brom earn friendly win over Walsall|
|Vardy at the double as Leicester beat Burton|
|Atletico impress in win over Oviedo|
|Herrera sacked by Mexico after ´punch´|
|Gerrard, Keane and Bradley pull out of MLS All-Star squad|
|Marseille reach Diaby agreement|
|Sammer thrilled with Vidal´s winning mentality|
|Platini expected to launch FIFA presidency bid|
|Romanov sacked me over Barca snub - Korobochka|
|Villa complete Crespo capture|
|Wolfsberger v Borussia Dortmund: Bender praises ´fun but exhausting´ training|
|Okaka swaps Sampdoria for Anderlecht|
|Southampton v Vitesse: Fonte excited for ´dream´ sojourn into Europe|
|Bournemouth agree King compensation|
|West Ham v Astra: Kouyate confident West Ham can progress|
|Vidal completes Bayern switch, signs four-year deal|
|Fabregas calls for Champions League improvement|
|BREAKING NEWS: Filipe Luis completes Atletico return|
|Bayern to present Vidal|
|Wenger unfazed by Mourinho´s spending jibe|
|Pellegrini: Sterling will justify price tag|
|Cavani hit with two-match Uruguay ban|
|Bonucci to remain at Juve until 2020|
|No bids for Berahino - West Brom|
|Putin: Blatter deserves a Nobel prize|
|Howe: Swansea a benchmark for Bournemouth|
|New Parma to play in Serie D|
|Mata vows to hit the goal trail at United|
|Drogba ´perfect fit´ for Montreal|
|Berahino ´not yet´ ready for Tottenham - Irvine|
|Romero lauds caring Van Gaal|
|Jese flying at Real under Rafa|
|Sampdoria unwilling to pay €10m for Balotelli|
|Mourinho talks up Arsenal title chances|
|Hull sign Ryan Taylor, Sam Clucas|
|Kane, Pochettino hail MLS All-Star test|
|Di Santo sorry for swift Werder departure|