When the bloody clue is first shown on the door it reads HANX with the last letter clearly an X. In the flashback, the clue reads HANK with the last letter a K with a straight vertical left stroke.
In the actual basketball game, Riley is seen playing with the hologram wristband. High school basketball rules would not allow a player to play while wearing a wristband or bracelet. The officials in a high level game like this would not allow it.