Dani Olmo scores in his debut to keep Barcelona perfect after 2-1 win over Rayo in Spanish league

Dani Olmo had a memorable debut for Barcelona, scoring a decisive goal in their 2-1 victory over Rayo Vallecano, preserving their perfect start in the Spanish league. Olmo scored in the 82nd minute after coming on as a substitute. Despite the win, Barcelona's joy was muted by a late injury to midfielder Marc Bernal. Rayo's new signing James Rodriguez watched from the stands.