Please give a summary of the chapter titled "Reindeer Games."

"Reindeer Games" is Chapter 20 in The Absolutely True Diary of a Part-time Indian.  The gist of the chapter is about Junior trying out for the basketball team at Reardan.  When he was at Wellpinit, Junior played for the basketball team, so at Reardan he tries to get on the team.  Coach is pretty intimidating, and he makes the boys run marathon laps to weed out people.  Many boys drop out.  Then Coach makes the boys play full-court one-on-one again in an effort to weed out some of the weaker boys.  Junior is put up against Roger, a large boy, and Roger dunks the basketball over Junior's head.  Coach asks Junior if he wants a break, and although he does, Junior agrees to take on Roger again.  Coach respects Junior's sense of resolve, and Junior makes the team.  Later in the chapter, Reardan plays Wellpinit in a game, and Rowdy makes a hard charge at Junior.  The Indians in the crowd are angry that Junior is a so-called traitor, and someone throws a quarter at him, causing a serious injury.  Junior ends up getting stitches and having to sit out the rest of the game.