The Proven Performance Escalator is a three-level (“Level One”, “Level Two”, and “Level Three”) non-negotiable amount by which an eligible player’s year-four Paragraph 5 Salary may escalate provided the player achieves the applicable qualifier set forth in Subsection (d) below. An eligible player who would otherwise qualify for more than one of the Level One, Level Two, and Level Three escalators shall receive only the highest such escalator. No player may receive more than one escalator. The Proven Performance Escalator shall be deemed a part of every Rookie Contract of a player selected in the second through seventh rounds by virtue of this Agreement and may not be separately attached to such Rookie Contract.