Once, I think, but this example.... it's all just ONE example, folks.
The first time I hit with PeaLouie, she could have beaten me quadruple bagels, because I'd never hit with someone with such flat fast strokes, or looked so cute. After hitting with her about 20 times, our set scores ALWAYS got down to 4, 5's or tiebreakers. You get USED to hitting with someone new.
First time in a new level, you will play badly. But you get USED TO IT after a few more tourneys, and your water will seek it's level.
Obviously, you who fall into my first sentence have never moved UP in tennis.