The Spanish winger scored in the 30th and 37th minutes before striker Dani Olmo scored as Barcelona took a two-goal lead from close range in the first half. Barcelona striker Lamin Yamal scored his first goal for Atletico Madrid, helping Barcelona to a 4-1 win in La Liga on Sunday.
Padre made it four in the 64th minute before Girona substitute Christian Stuni scored a consolation goal, six minutes before Barcelona sent off Fernando Torres with a straight red card.
Gallagher, who moved to Atletico this summer on a long-term move from Chelsea, gave Valencia the lead after 39 minutes at home.
Barcelona, Real Madrid Four points ahead of Atletico and Villarreal Arsenal’s Champions League rivals Atalanta scored all the goals in the first half to beat Fiorentina 3-2 at home in Serie A on Thursday.
The visitors led 2-1 after half an hour but the Europa League holders responded with two goals in 60 seconds, Charles De Ketelaere heading in 2-2 and Ademola Lookman netting in the first minute.Antonio Conte’s Napoli leapfrogged champions Internazionale at the top.Conte praised Romelu Lukaku for his performance in the 4-0 win over Cagliari.The Belgian scored one goal and assisted two goals.
Giovanni Di Lorenzo Khvicha Kvaratskhelia and Alessandro Buongiorno scored the other goals for Napoli.Scotland midfielders Scott McTominay and Billy Gilmour made their debuts after moving to Napoli at the end of the transfer window.The pair, signed by Manchester United and Brighton respectively, made it 3-0 to their new club in the 74th minute.
Inter had a chance to return to the summit late on Sunday but were held to a 1-1 draw at Monza.In the 81st minute, the hosts took a surprising lead through Dany Mota’s header, but Denzel Dumfries equalized from close range in the 88th minute.Inter are eight points clear of second-placed Juventus and Torino on goal difference after four games, Napoli leads the table with nine points after the same number of matches.