Gareth Bale scores on debut for new club Real Madrid in 2 - 2 draw with Villarreal . World 's most expensive footballer scores in the 38th minute of debut . Barcelona keep 100 % record in league with dramatic win over Sevilla . Dani Alves put the home side ahead with a 36th minute header and when Lionel Messi scored to make it 2-0 with 15 minutes to go all was going according to plan . Joint champions Atletico Madrid also maintain perfect start with 4 - 2 win against Barcelona .
Gareth Bale scores on debut for new club Real Madrid in 2 - 2 draw with Villarreal . World 's most expensive footballer scores in the 38th minute of debut . Barcelona keep 100 % record in league with dramatic win over Sevilla . Joint champions Atletico Madrid also maintain perfect start with 4 - 2 win against Barcelona .