Super Peach Spin
From the Super Mario Wiki
Super Peach Spin is Peach's Offensive Power Shot in Mario Power Tennis and Mario Tennis: Power Tour. Peach closes her eyes, spins quickly, and hits a curve ball with the power of love. This will knock the opponent back a few inches, then attract the opponent to the net, leaving them open to Lob Shots and causing him or her to lose any stored Power Shots if the shot is returned. The recovery time is very slow, though.