Players generally enter the supplementary draft because they missed the filing deadline for the NFL draft or because issues developed which affected their eligibility (such as academic or disciplinary matters).
Pemain umumnya memasukkan tambahan draft karena mereka melewatkan batas waktu pengajuan untuk NFL draft atau karena isu-isu yang berkembang yang mempengaruhi kelayakan mereka (seperti akademik atau disiplin penting).