re: Eligibility: someone explain it to me clearly

The Players who attended mini camps signed some form of an agreement.


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Do You Sign a Contract at a Mini Camp or Tryout if You’re Not Drafted?

In most professional sports, yes — you will sign some form of agreement when you attend a mini camp or tryout, even if you’re not drafted. This is part of the league’s process for managing player movement, protecting rights, and ensuring compliance with labor and anti-abuse rules.

NFL example:
Undrafted players who attend training camp are typically “signed” to a tryout contract or a non-exclusive contract that allows them to participate in camp and workouts. This contract is not a long-term deal; it’s usually short-term (often just the length of the camp) and can be terminated if the player is not on the final roster. In some cases, the signing may include a small stipend or stipulated pay, but it’s not guaranteed