The anime doesn't show what racquets the players use.
The manga... all the racquets that the main players use have already been decided. Echizen uses a Breuline Grandea, Sanada a Babolat Drive.
If you look at the color pages, you can kinda figure out what racquets they're using. Also, at the beginning of the series, in the volume releases, there were extra pages talking about the players, and one of those talked about things was what racquet they used.
If Echizen gets a door against Tooyama... it won't do much good. Hyakuren will probably get him to almost even hitting with Mr. gene freak, but him getting perfection would piss me off.