An early goal from Jordi Alba set the world and European champions on their way to victory in Minsk, with Pedro scoring a fine hat-trick to make the score 4-0 by the final whistle.
As often happens, Spain dominated possession during the game, and this control was something that Del Bosque highlighted when speaking to journalists after the match.
"We played well and controlled the match. They [Belarus] could not play to our level, and never felt comfortable on the pitch," the trainer told RFEF's official website.
"It was a good game, very complete. The players felt very comfortable from the beginning, linked well, played with depth, and recovered the ball well. The talent and quality of our players did the rest."
When asked about the performance of Pedro, he said: "He's playing very well for his club. Pedro is fresh, dynamic, and has important offensive aggressiveness that breaks the mould slightly, and allows us to play on the front foot."
Sergio Ramos was substituted in the 70th minute for Raul Albiol, while David Silva also made way for Andres Iniesta in the second half, despite the Manchester City attacker enjoying a decent game.
"Sergio had a small knock, and though he did not have to come off, a change was preferable, though he wanted to keep playing. Silva had a card and I wanted to distribute the playing time between Silva and Andres Iniesta," Del Bosque explained.
Spain face France in their next World Cup qualifying game on October 16, and Del Bosque was full of praise for their next opponents ahead of the match.
"It will be a very difficult game because France have an extraordinary squad. They have strength in depth in attack, and have very good players elsewhere who are calm but with physical power.
"It will be a difficult game," he added.
Cesare Prandelli says he is satisfied with the difficult victory of Italy to Armenia valid for qualification for the 2012 World Cup.
