Quique Setien praised Barcelona's resilience in Sunday's 3-2 win over Real Betis but said there is still room for improvement from the LaLiga champions.
Sergio Canales' early penalty for Betis was cancelled out by a wonderful goal from Frenkie de Jong, the Barcelona midfielder clinically dispatching Lionel Messi's sublime pass.
Nabil Fekir restored Betis' advantage with a fine finish, before Sergio Busquets scored a second equaliser on the stroke of half-time.
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Clement Lenglet then headed home Messi's free-kick 18 minutes from time to seal all three points, although the Frenchman blotted his copybook by picking up a second yellow card soon after Fekir was also dismissed for Betis.