Zinedine Zidane has admitted his tactical tinkering may have hurt Real Madrid in their 1-1 draw with Real Sociedad, but says it does not affect their bid for the Liga title.
The defending Liga champions required a late goal from Vinicius Junior to cancel out a header from Cristian Portu to secure a point at the Alfredo Di Stefano stadium.
The draw leaves Real five points adrift of city rivals and league leaders Atletico Madrid, who they face on Sunday.
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Zidane switched formations at half-time to a three-man central defence, and Portu ghosted in at the far post to head home on 56 minutes.