The first-round edge prospect has the size, skillset, and versatility to be a three-down player at 6'3" and 272 pounds, with instinctive play, fluid movement, great motor, and an unusually deep array of moves for a rookie. He can even slip inside on passing downs if needed. While he will have a significant role as a rookie, he will likely not see enough action to be a significant fantasy factor in 2026. However, if Khalil Mack retires after this season—a strong possibility—Mesidor should step into a three-down role in 2027. The source recommends keeping an eye on him this summer and landing him on a taxi squad in every dynasty league.