While the redshirt status may be conferred by a coach at the beginning of the year, it is not confirmed until the end of the season, and more specifically, it does not rule an athlete ineligible in advance to participate in the season. If an athlete shows great talent, or there are injuries on the team, the coach may remove the redshirt status and allow the athlete to participate in competition for the remainder of the year. The first athlete known to extend his eligibility in the modern era of redshirting was
Warren Alfson of the
University of Nebraska in 1937. Alfson requested that he be allowed to sit out his sophomore season due to the number of experienced players ahead of him. In addition, he had not started college until several years after graduating from high school, and thus felt he needed more preparation. The year off greatly benefited him; Alfson was All-
Big Six Conference in 1939 and an
All-American guard in 1940. In the
NJCAA system, use of redshirt may be pointless, as most students graduate in two years. However, the NCAA counts any collegiate sports participation in any affilitation organization, including the NJCAA,
NCCAA,
USCAA and NAIA as using a year of NCAA eligibility. On December 18, 2024, a
United States District Court issued a preliminary
injunction in favor of
Diego Pavia after preliminarily finding that NCAA Division I by-laws 12.02.06 and 14.3.3 and the rules in the
NCAA Division I 2024–25 Manual constitute a commercial agreement, can be replaced by a less restrictive alternative and cause irreparable harm to Pavia. The injunction prevents the NCAA from enforcing by-law 12.02.6 and rule 12.11.4.2 against Pavia,
Vanderbilt University or any other Division I institution for which Pavia chooses to play football in 2025. By-law 12.02.6 says Rule 12.11.4.2, commonly known as the Rule of Restitution, provides retroactive punishments directed at both a student-athlete and the institution for which he or she competes, when a student-athlete, who is ineligible under NCAA rules, is permitted to compete in accordance with an injunction that is later voluntarily vacated, stayed or reversed, or if it is finally determined by a court that injunctive relief was not justified. Diego Pavia played for two seasons at
New Mexico Military, an NJCAA institution. One of those two seasons is not counted by the NCAA for determining eligibility, because it is exempted by the NCAA's blanket COVID waiver. Counting the second year at New Mexico Military along with two seasons at
New Mexico State (2022 and 2023) and one season at Vanderbilt (2024) would mean his eligibility was exhausted at the conclusion of the 2024 football season. The NCAA appealed the injunction in the
Pavia case. However, since it had already granted the relief Pavia sought through the blanket waiver, the court dismissed the appeal for lack of jurisdiction, since the matter had become moot. In January 2017, the
trade association for college football coaches, the
American Football Coaches Association, proposed a change to that sport's eligibility rules that maintains the current model of four years of play in five years, but significantly changes the redshirt rule. Under the proposal, medical redshirts would be eliminated, but redshirt status would not be lost unless a player participated in more than four games in a season. The proposal, which was unanimously passed by the AFCA subcommittees for all three NCAA divisions, was approved by the NCAA Division I Council in June 2018, taking effect with the 2018 college football season. The original proposal was to have been retroactive, meaning that players with athletic eligibility remaining who had played in four or fewer games in a given season would have effectively received one extra season of eligibility, Generally, eligibility must be used up within six years of enrolling at an eligible NCAA institution. Redshirts and medical redshirt eligibility deferrals cannot go beyond this six-year period. This rule does not apply to other collegiate sports organizations, like the
NAIA, where
nontraditional students are allowed to compete. In the NCAA, use of various eligibility deferral techniques can lead to situations wherein an athlete has been an athlete for much longer than four years. Because the NCAA gave a free season of eligibility to student-athletes affected by disruptions brought on by
COVID-19, this led to many athletes competing in a seventh season during the 2021–22 academic year. One example is Summer Allen of
Weber State, whose competitive college career spanned nine seasons. She competed in both the 2013 and 2021
NCAA Women's Division I Cross Country Championship. Her eligibility was extended by going on an 18-month
LDS Church mission that spanned two years of eligibility, redshirting one year, having a pregnancy one year, and losing a season due to COVID. Before the
2023 season,
NCAA Division II followed the redshirt rules used in D-I before 2018. The Division II Presidents Council voted in October 2022 to support a proposed change in redshirt rules for football, which would allow players in that sport in their first year of college attendance to play up to three games without losing a year of eligibility. This rule was approved by the D-II football membership at the 2023 NCAA Convention and took effect with the 2023 season. ==Other colors==