topspin

yläkierre A rotational motion, especially that given to a ball, in which the upper surface spins in the direction of motion.
puhekieltä To spin (a ball) with this motion.
{{quote-journal|date=August 27, 2007|author=John Branch|title=His Next Line to Cross|work=New York Times|url=http://www.nytimes.com/2007/08/27/sports/tennis/27nadal.html