Walcott was encouraged by the return to match action of Fabregas, who made his first Arsenal appearance of the season as a second-half substitute on Saturday.
"He is starting to get fit now," Walcott told arsenal.com. "He's looking very good in training. He spots balls that nobody else does and it's nice to see him back out on the pitch and playing well.
"Jack Wilshere did fantastically well [against Blackpool], he had a good pre-season and he spots the ball as well. We have so many fantastic players and as long as we keep them all fit we are going to be very strong.
"The bench we had on Saturday was very strong. Obviously we lost Samir Nasri and Emmanuel Frimpong to injury - he had a very good pre-season.
"The most important thing is no injuries and I think we'll have a good season."