Mendoza (22-8) faces Northwest Kansas' Enkhbold Sukhbaatar in the 149-pound fifth-place match. Sukhbaatar topped Mendoza 7-3 in a first-round match on Friday.
Mendoza dropped a 3-2 decision to Cloud County's Austin Eldredge in the consolation semifinals Saturday.
Santee (13-13) faces Iowa Lakes' Andre Bissainthe in the 285-pound fifth-place match.
Santee fell to North Idaho's Connor Sullivan 4-3 in the consolation semifinals.
Luthens (12-9) faces Lackawanna's Nathaniel White in the seventh-place match Saturday afternoon.