Throw-in Violation or Out of Bounds Violation

[Camron Rust]

First, players on the same team and the team with the ball are traditionally called A1 and A2. Players on the team without the ball are B1, B2, etc.

So, I'm assuming your question was about two players on the same team.

Others have answered that question, but, consider this....what if it were a throw-in violation? If it were, that means that, for a throw-in near the boundary line, team B could just ensure they had one foot OOB and touch the ball in order to cause a throw-in violation on team A. Does that make any sense? For team B to touch the ball while OOB and then get possession of the ball as a result? Of course not. Thus, it is an OOB violation on team B...team A's ball at the spot where it was touched OOB.