rules (each team gets one possession), but each possession is started with a kickoff rather than at the 25-yard line. Teams must go for a two-point conversion (by scrimmage play) starting with the third overtime session. Co-ed play – Two female placekickers, Katie Hnida and Julie Harshbarger, have played for the CIFL. Excluding all-female leagues, the CIFL is one of only three professional football leagues (the Atlantic Coast Football League in 1970, the Indoor Football League in 2014) to have hired female players; the CIFL is the only league to have hired more than one, and the only one to have allowed its female players to score points. Season structure Since 2013, the CIFL season featured a 10-game, 12-week regular season running from February to April and a 6-team single-elimination playoff beginning in April, culminating in the CIFL Championship Game in May. Traditionally, American high school football games are played on Friday nights, American college football games are played on Thursday nights and Saturdays, and most NFL games are played on Sunday. Because the CIFL season is played at a different season from the high school, college, and NFL seasons, the CIFL scheduled Friday, Saturday, Sunday, and (new for 2013) Monday games. Exhibition season During minicamps in the winter, CIFL teams typically played one or two exhibition games from early January through early February. Each team was free to schedule these games, but all games were approved by the league. No games were allowed within one week of the team's first regular-season game. The games were useful for new players who were not used to playing indoor football. Regular season Following the preseason, each of the 10 teams embarked on a 12-week, 10-game schedule, with the extra weeks consisting of a bye to allow teams a rest sometime in the middle of the season. The league had been using a scheduling formula to determine which teams play which during a given season. Under the formula since 2010, each of the six teams' respective 10-game schedule consisted of: Each team playeds 6 to 8 of the teams in the league, with the leftover number of games scheduled against teams already played. Each team played 5 home games and 5 road games. This format was tweaked due to a travel team being in the league since 2009. The current rule reads: The CIFL regular season consists of a schedule of 10 games