This is the North Star when looking to hit with added topspin. Simply put, more space between the strings lets them move—or stretch—more at contact, and consequently return more energy to the ball.

In a little-known curtained workspace next to Sobey’s Stadium, behind the scenes of Canada’s biggest pro tennis tournament, a team of stringers work around the clock to ensure players’ racquets are ...

A University of Colorado Boulder alum created what he says is the world’s first-ever 100% synthetic, biodegradable tennis string through his Boulder-based company Velociti. Ryan Burbary, who graduated ...