A relieved Rijkaard said afterwards: "I am pleased with everything he (Krkic) does. Everything he does on the field, the decisions he makes, is correct. Despite his age, he played like a great player of this team.
"It's important he does not lose his humility and he continues working hard."
Rijkaard added: "The team worked very hard, began well, scored the goal and soon we also had to suffer. Schalke has a good team, did everything to change the result, but I congratulate my players because they worked hard for the victory."
Samuel Eto'o added: "To see Krkic score the winning goal fills us all with joy. The lad is a phenomenon."