There is no goalkeeper in the world as decisive as Ter Stegen Real Sociedad vs Barcelona Was key in Barcelona's victory

Marc-Andre Ter Stegen has become arguably the most decisive keeper in world football. The German shot-stopper has saved so many shots for Barcelona that one truly loses count.

Much of the credit must be given to the keeper for the 2-1 win against Real Sociedad, his impressive performance in goal including blocking two almost certain goals from Theo Hernandez and Juanmi, both when it was still 1-0 on the scoreboard.

Meanwhile, minutes later, at the opposite end, Geronimo Rulli conceded two goals from Luis Suarez and Ousmane Dembele.

It's important to have a good goalkeeper, but even more crucial in the case of Barcelona, and the former Borussia Monchengladbach man is clearly among the best signings in club history, given that he only cost 12 million euros.

Looking back to the preview of Barcelona's visit to the Estadio Anoeta, Valverde had warned the difficulties of this match considering the past history at this ground.

"We need to have a good start to the game, not like the one against Huesca, and we know that the crowd will be on top of it, making it even more difficult, " the coach explained at the pre-match press conference.

Although the warning was well documented, the Barcelona players had to make another comeback in San Sebastian, after conceding a goal in the 12th minute.