I did not read Book 1 and can confirm this is a standalone story. The first few chapters fill you in on anything that happened in the prior story & the characters are simple enough to where I don't feel I missed anything.
The book is split POV between Jeff and Andi. Andi is faced with a coach and teammates who immediately dislike her, and it turns out the coach is racist toward the non-white players, too. Jeff is dealing with a difficult teammate while also trying to help Andi from behind the scenes.
The action/gameplay in the book is well done, but for me, the writing was too on the nose, even from a middle-grade story. The characters are simple, and this is the same prejudice-is-bad message I hear in every story with nothing new. The story also sidelined Jeff hard. Very little in his plotline matters and his overall role in the story felt like a minor supporting character as opposed to a split protagonist.