New signing Olmo scored on his first La Liga debut for Barca since 2014[weirushui]

In the third round of La Liga, with the goals of Pedrie and Olmo, Barcelona won a 2-1 reverse victory over Rayo Vallecano, making it the third straight win since the start of the new season.

According to Data.com, the last time a Barca player scored on his La Liga debut was back in August 2014, when Sandro Ramires scored on his debut away to Villarreal.