Arsenal can cut down the deficit to Premier League leaders Manchester City and challenge for the title this campaign, midfielder Granit Xhaka said.
Costa turned Juanfran's low cross into the net in the 69th minute for Atletico's third goal in the first leg of the last 16 tie against third division Lleida but immediately limped to the sidelines. He did return to the pitch, however, and completed the game despite bleeding from his knee.
Images from Saturday's action in the Premier League.
News of all that's transpired on and off the football field
Ronaldo back for Man Utd but injured Shaw faces weeks out
News of all that's transpired on and off the football field
A round-up off all transpired on and off the football pitch
New of all that's transpired on and off the football field on Saturday.
Steve Cooper's team remained calm in front of a 53,000-strong crowd as substitute Nya Kirby sealed the issue after their goalkeeper Curtis Anderson denied Hinata Kida.
Bayern Munich came from a goal down to ease past hosts Bayer Leverkusen 4-2 on Saturday and remain firmly on course to retain the Bundesliga title with four games remaining. The Bavarians are within touching distance of their eighth consecutive league crown, but Leverkusen's 17-year-old Florian Wirtz stole some of the spotlight at the end, becoming the youngest Bundesliga scorer when he netted in the 89th minute.
News of all that's transpired on and off the football field
A summary of Wednesday's action in the Premier League.
Mbappe becomes PSG's all-time highest goal-scorer as French champions extend lead
News of all that's transpired on and off the football field.
Centre forward Eder, who scored the winning goal in the Euro 2016 final against France, was among 10 players from that squad omitted from Santos's list. Other unlucky players included midfielders Andre Gomes and Renato Sanches, forward Nani and defender Eliseu.
Zlatan Ibrahimovic bagging four goals, while Juventus and Bayern Munich preserved their leads and FA Cup holders Arsenal were dumped out of the competition.
Lionel Messi was in inspired form as champions Barcelona hammered Celta Vigo 5-0 on Saturday, recording a fourth straight league victory which keeps them top of La Liga after Real Madrid had put the pressure on the Catalans with a 4-1 win at Eibar.
IMAGES from the football matches played across Europe on Sunday.
News of all that's transpired on and off the football field
News of all that's transpired on and off the football field
IMAGES from the English Premier League matches played on Sunday
News of all that's transpired on and off the football field
News of all that's transpired on and off the football field
News of all that's transpired on and off the football field
Manchester City needed a second-half penalty from striker Erling Haaland to break the resistance of a dogged Crystal Palace.
News of all that's transpired on and off the football field
A round-up of Saturday's action in Serie A, La Liga and Bundesliga.
A summary of Thursday night's UEFA Champions League matches.
Eden Hazard finally scored his first goal for Real Madrid as his side beat second-placed Granada 4-2 in a highly entertaining game at the Santiago Bernabeu on Saturday to go four points clear at the top of La Liga.
A summary of Sunday's action in Serie A and Bundesliga.
Cristiano Ronaldo scored twice as Juventus strolled to a 3-0 home win over bottom side Crotone in the Italian Serie A on Monday, with the victory taking the champions up to third in the standings.
News of all that's transpired on and off the football field
Arsenal manager Arsene Wenger slammed his side's defending after watching Anderlecht claw their way back from three goals down to earn a 3-3 draw in Champions League Group D on Tuesday.
A weekend of surprise results across Europe's big leagues saw Bayern Munich's unbeaten run come to an end, Napoli knocked off top spot in Serie A and Manchester City toppled in the Premier League where Leicester City are the new leaders.
A fortunate 85th-minute goal from Brazilian Willian earned Premier League champions Chelsea a 1-1 draw at Liverpool on Saturday after Mohamed Salah's 15th goal of the season looked to have given the hosts the three points.
News of all that's transpired on and off the football field
Ten-man Premier League leaders Leicester City lost at title-chasing Arsenal, while La Liga pacesetters Barcelona crushed Celta Vigo and Juventus took over from Napoli at the top of Serie A by edging their rivals.
Spain coach Luis Enrique said football had been unfair to his side after Thursday's dramatic 3-2 defeat in Croatia left them in danger of failing to reach the UEFA Nations League finals.
Romelu Lukaku scored twice to earn Belgium a 2-1 victory over Switzerland in the Nations League on Friday, lifting the mood in the country after a week marred by match-fixing allegations.
Liverpool's Mohamed Salah is willing to put his Champions League ambitions on the back-burner to help the Merseyside club claim their first English league crown in 29 years, the Egyptian forward has said.
