Starting on March 22 at the Nasdaq-100 Open in Key Biscayne, Florida, professional tennis will utilize instant replay. The U.S. Open will be the first Grand Slam event where it will be used. It was already used at a tournament in Australia in December. Is this good for tennis? Is it bad for tennis?

It’s really hard to say. I know that for other professional sports, when the instant replay machine overturns a call in favor of my favorite team, I’m pretty happy with it. When it overturns a call that I was happy with, not so much…

Players will get the opportunity to review two calls per set, plus extra opportunities for tie breakers.