Barcelona and Robert Lewandowski denied by Rayo Vallecano

Sergio Busquets was sent off as Robert Lewandowski’s Barcelona debut against Rayo Vallecano ended in a frustrating stalemate.

The Spain midfielder was dismissed for a second bookable offence in stoppage time at the Nou Camp on a night when Lewandowski was unable to open his LaLiga account at the first time of asking.

Joselu won and converted a penalty in the eighth minute of added time as Espanyol staged a remarkable fightback to draw 2-2 at Celta Vigo.

Goals from Iago Aspas and Goncalo Paciencia either side of half-time looked to have put the hosts in the driving seat, but Edu Exposito halved the deficit with 18 minutes remaining before Joselu held his nerve to earn a point.

Villarreal substitute Alex Baena scored twice inside the final nine minutes to ease his side to a 3-0 victory at Real Valladolid.

Nicolas Jackson opened the scoring with 49 minutes gone, but Baena killed off any hopes of a fightback with 81st and 90th-minute strikes.

Ante Rebic helped himself to a double as Serie A champions AC Milan launched their campaign with a 4-2 win over Udinese.

Trailing to Rodrigo Becao’s second-minute effort, Milan levelled through Theo Hernandez’s 11th-minute penalty before Rebic and Adam Masina traded goals.

However, Brahim Diaz restored the home side’s advantage after the break and Rebic made sure.

Arch-rivals Inter Milan were also victorious as striker Romelu Lukaku announced himself with a goal just two minutes into his return.

Assan Ceesay’s equaliser looked to have claimed a point for Lecce, but substitute Denzel Dumfries won it for the visitors in the fifth minute of stoppage time.

Ademola Lookman was also a late, later scorer in Atalanta’s 2-0 win at Sampdoria.

The former Everton midfielder’s 95th-minute goal