Ter Stegen, the leader Barcelona Most decisive player in Europe

Barcelona top their Champions League group mainly due to Marc-Andre ter Stegen's performances in the competition so far.

The Catalan side suffered in Prague against Slavia, but the German goalkeeper was once again excellent between the goalposts.

Ter Stegen has become one of the most decisive players for Ernesto Valverde's side in Europe, but he is also an important figure in the dressing room.

He voices out his concerns, while he is respected by everyone and he is demanding with both his teammates and himself.

Despite his 27 years of age, he leads both on and off the pitch and especially in the Champions League, where he has conceded two goals in three games.

Slavia Prague had 22 shots, but just one of their strikes ended up in the back of Barcelona's net, while Inter striker Lautaro Martinez was the other player who managed to beat the German, who has saved 14 of his rivals' 16 shots on target.

His reflexes and tranquillity place him among the best goalkeepers in the world, while he is one of the favourites to win individual accolades for yet another season.

Apart from standing out on the pitch, however, Ter Stegen has also become a leader off the field and he showed that with his remarks after his team's unconvincing win in Prague.

"We haven't played at the level we wanted," Ter Stegen said.

"Luckily, we've taken all three points, which is obviously the most important thing.

"But I think we need to talk about some things."

His public comments were followed by a warning inside the dressing room, where he didn't hesitate to ask his teammates for immediate reaction.

The German longs for another Champions League trophy and he is aware that performances like the one on Wednesday can't be permitted, should Barcelona want to go all the way in the competition.