5 minutes of Iga Swiatek on Another Level! | US Open

You want to know why she's number one? This is just terrific movement. Is that in? Amazing. If it had been out it was still fairly amazing. Yeah, I think this thing stayed in. One of our few complaints is sometimes with the crowd noise you don't hear if it's a call or not, but I think that was in. That was right on the line. Look at that footwork. Reactions. Well Saville did again. There certainly were, but what about Saville's foot speed? That's a confidence building opening game if ever there was one. Really got it away from Ostapenko and set up her best shot that forehand when she has a bit of time. See it right away. So quick. So quick to the short ball. So big off the forehand. 4-2 opening set for the world's number one. She's found tech for three years. It's been perfect. 2 and now world's number one. That one landed. She's really squeaking it up back there. The 21-year-old forehand.