Robert Lewandowski has come off the bench to help Barcelona win 4-0 at Cadiz in La Liga as the Poland striker extended his superb scoring run before facing former club Bayern Munich.
Play was paused for more than a half-hour toward the end of the game after a fan suffered a heart attack in the stands. Cadiz said in a statement that the man was successfully treated with a defibrillator by a medical team, evacuated on a stretcher and admitted to a local hospital.
"Health, once again, is the most important thing," Barca coach Xavi said.
"We hope that he gets better as soon as possible."
The game then restarted for the final eight minutes.
By then, Lewandowski had scored his ninth goal in five games to double Barcelona's lead after Frenkie de Jong's 55th-minute opener. Lewandowski has only failed to score in one game -- his debut -- since joining from Bayern this summer.
Following the halt in play for the ill fan, Lewandowski assisted Ansu Fati before Ousmane Dembele struck from long range to make it a rout.
A fourth win in a row in Spain has lifted Barcelona to the top of the standings, one point ahead of Real Madrid before the defending champions host Mallorca on Sunday.
Socceroos winger Awer Mabil came on in the 72nd minute for Cadiz, who remain in last place after losing all five games they have played without scoring a single goal.
Sevilla got their first win of the season in all competitions after holding on for a 3-2 victory at Espanyol while playing the final minutes with 10 men.
Jose Angel Carmona, a 20-year-old defender, led Sevilla with an assist for Erik Lamela and two goals to build a 3-0 lead.
Espanyol rallied behind a penalty converted by Joselu Mato and a goal from Martin Braithwaite.
Lamela was sent off in the 84th with his second booking, but Sevilla defended well in added time.
Elsewhere, Atletico Madrid eased to a 4-1 home win over Celta Vigo and Valencia lost 2-1 at Rayo Vallecano.