<P> In sports, the practice squad, also called the taxi squad or practice roster, is a group of players signed by a team but not part of their main roster . Frequently used in American and Canadian football, they serve as extra players during the team's practices, often as part of the scout team by emulating an upcoming opponent's play style . Because the players on the practice squad are familiar with the team's plays and formations, the practice squad serves as a way to develop inexperienced players for promotion to the main roster . In addition, it provides replacement players for the main roster when players are needed as the result of injuries or other roster moves, such as bereavement leave . </P> <P> During the 1940s, Cleveland Browns coach Paul Brown invented the "taxi squad," a group of promising scouted players who did not make the roster but were kept on reserve . The team owner, Arthur "Mickey" McBride, put them on the payroll of his taxi company, although they did not drive cabs . The name stuck, and the practice of retaining a squad of ready reserves spread throughout professional football . However, the NFL did not officially recognize the existence of taxi squads until February 18, 1965 . On that date, the NFL team owners formally adopted a 40 - man active roster supplemented by a taxi squad of unregulated size, which was officially termed the "future list ." Over the next few seasons, the NFL gradually limited the allowable number of inactive players to seven, and regulations were established in relation to injured reserve and waiver practices . In 1974, the NFL eliminated the taxi squad altogether, moving the seven inactive spots into an expanded 47 - man active roster . Beginning in 1977, a more limited inactive system was introduced (often consisting of either two or four players, depending on the season), and these players were sometimes referred to as taxi squad members . The NFL has since reintroduced larger reserve squads, now known as "practice squads ." </P> <P> Starting in 2017, each NFL team may keep up to ten members on its practice squad in addition to the 53 - member main roster . A majority of those on a practice squad are rookie draft picks and undrafted free agents who were released prior to the regular season . A practice squad also includes veterans, up to four as of the 2016 season . Players may be signed to a practice squad for several reasons: for lack of space on the team, due to injury, or because they require more development . Practice squad players can be signed to any team's 53 - man active roster without compensation at any time during the season . </P> <P> A player cannot participate on the practice squad for more than three seasons; he is eligible for a third season only if the team has at least 53 players on its active / inactive list for the duration of that player's employment, or have no prior accrued seasons in the NFL (an accrued season is six or more games on the active roster); or if he has accrued a year of NFL experience on a club's 53 - man active roster . If the player was on the active list for fewer than 9 games during their "only accrued season (s)", he maintains his eligibility for the practice squad . Games in which a player is listed as the third - string quarterback do not count as being on the active list . Former quarterback Mike Quinn, who was listed as the third - string quarterback for several teams throughout his career, is a notable example, being practice squad eligible during his 8th NFL season . </P>

How many players on practice squad madden 18