A general rule is that freshmen tend to tire out later in the season and hit what is referred to as "the Freshman Wall." Unfortunately for us, Breanna Stewart didn't seem to get the memo regarding that one.

the mythical "Freshman Wall" with Sonia Citron. She got better later in the season. That one may be more of a "wives' tale" than a "general rule". We need more data!

It's specifically meant to be around Tournament time, since High School seasons don't last nearly that long. However, things might have changed now with more AAU teams, etc. resulting in players being used to playing for long stretches of time.

Sonia Citron did better at tournament time. Up until the tournament games, she scored 11.8 ppg, 43.3 fg%, 15.37 Efficiency rating, and 48.3 efg%—all excellent! During the tournament games she scored 12.8 ppg, 56.1 fg%, 16.25 Efficiency rating, and 58.5 efg%. (When I say tournament games, I mean ACC and NCAA.)

I agree with you that because of the longer season and that the games are against tougher opponents, you would think that the "Freshman Wall" would be real. For those two, at least, it was not. As I say, we need more data.

Maybe you are on to something with all the summer playing time in high school. The fact that some freshmen do even better against late season, tournament-quality opponents, probably says more to the character of the player.