After canceling his practice session, Sinner ultimately trained indoors

Although Jannik Sinner had canceled his scheduled practice at Aorangi Park on Tuesday—raising concerns about his participation in his match against Ben Shelton—the Italian instead trained away from the public eye indoors.

Speaking to ESPN, Darren Cahill provided an update on the world No. 1 and explained the decision to train indoors: "We don’t have the MRI results yet.

He had it earlier in the day, and he couldn’t take a day off, so he wanted to hit some balls… So Simone (Vagnozzi, his other coach) and I just fed him some balls from the basket.

It’s not always a bad thing (to practice indoors on hard courts). The more you play on grass with irregular bounces, the more you lose your timing…

Agassi did it all the time. We’ve been doing it for two years, so it wasn’t unusual.

When he fell, we thought it was a wrist injury. But he hit his elbow and felt it throughout the match. It was very sore afterward.

He lost about six or seven miles (around 10 km/h) per hour in average speed on his forehand, as well as on his serve."