極限美式足球聯賽
歷史 > LFL > 2009–2012

該聯盟的概念起源於超级碗中場休息（英语：）電視特別節目「內衣碗（英语：）」，這是按次付费电视的賽事，與超級碗中場表演相對播出。
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In 2009, league chairman Mitch Mortaza expanded the concept from a single annual exhibition game to a ten-team league, branded as the Lingerie Football League, or LFL. The league operated on a similar schedule to the 國家美式橄欖球聯盟 (NFL), playing in fall and winter and played most of its games indoors with similar rules to indoor football. Many of the teams were coached by former NFL players and coaches who were already well known in their respective cities. Many of the LFL players had a background in other competitive athletics at the college and semiprofessional level, as well as some experience in tackle football from playing in other semiprofessional leagues.
最初的製服包括護肩、護肘、護膝、功能服和帶有透明塑膠護目鏡代替面罩的冰球式頭盔。內衣足球聯盟最初的製服由運動胸罩和內衣組成，這些內衣比保護性的更暴露，還添加了蕾絲、絲帶和吊襪帶作為裝飾。雖然這些制服經常受到媒體的批評，但球員對制服的使用反應通常褒貶不一，比較了其與田徑制服或沙灘排球比基尼的覆蓋範圍的相似性。The initial uniforms consisted of shoulder pads, elbow pads, knee pads, performance wear, and 冰球-style helmets（英语：） with clear plastic visors in lieu of face masks. The original uniforms of the Lingerie Football League consisted of an athletic 胸罩 and underwear that were more revealing than protective, as well as added lace, ribbons, and garter（英语：）s as decoration. While these uniforms were routinely criticized by media, players' reactions were typically mixed on the use of the uniforms, comparing the similarities in coverage to 田賽和徑賽 uniforms or 比基尼泳衣.
三個賽季後，聯盟宣布將在加拿大增加一個姊妹聯賽，並於2012年8月開始比賽。
After three seasons, the league announced it was adding a companion league in Canada that began play in August 2012. It then pushed back the US season to 2013 on a spring and summer schedule, mirroring other indoor football leagues.
During the hiatus, the league announced it would change its name to the Legends Football League, retaining the LFL initials, on January 10, 2013. The league also announced that the athletes would wear "performance apparel" instead of lingerie, but the uniforms look very much the same as before. In addition to the new uniforms, redesigned shoulder pads were introduced to provide more protection for players. Other league changes included eliminating images of sexy women from team logos and changing the league tagline from "True Fantasy Football" to "Women of the Gridiron". Along with the rebrand of the league in 2013, the league also began changing the uniforms as the originals were too heavy on sex appeal, initially dropping the ribbons and garters. The league designed new ones for the 2014 season closer to more traditional 運動服, resembling uniforms similar to volleyball players, replacing the ribbons with shoelaces on the front of the top and bottom.
The LFL then began looking into a Latin American league with six franchises throughout Mexico, Brazil, and Argentina. On September 16, 2013, the LFL postponed the entire 2013 LFL Canada season until 2014 with plans to merge the US, Canada, and Mexico teams into a single league called LFL North America.
The LFL then formed another league in Australia in December 2013 and played one season. LFL Australia's debut season in the beginning of 2014 marked the debut of the new performance wear uniforms. The LFL planned to launch a fourth global league – LFL Europa – in 2015 with teams in 都柏林 (Ireland), 曼彻斯特 (England), 杜塞尔多夫 and 汉堡 (Germany). 巴塞罗那 (Spain) and 美因河畔法兰克福 (Germany) had previously been mentioned as potential franchise cities. With four global leagues, the league announced intentions to compete in a 極限美式足球聯賽 in 聖保羅 (巴西) in 2015. By July 2014, the league planned a three leagues: LFL Americas, LFL Europa, and LFL Oceania. On June 10, 2015, the LFL announced that there would be no international play through at least 2017 with sole focus on growing the league in the US, the exception being international exhibition games to introduce prospective countries to the league.
The LFL announced new uniforms with new colors for the 2016 season. Numbers and logos were printed on the uniform as opposed to previously being sewn on. In addition, the league also announced that teams would have a choice of 偽裝 (動物學) or black alternates. In 2017, the league also added a long pants uniform in lieu of the regular bikini bottom for the final home games.
On December 13, 2019, the league announced that it would not be producing a 2020 season and would re-evaluate markets in the future. Four days later, the LFL was restructured into the Extreme Football League, which was announced to begin play in April 2020. The league size remained at eight teams, which initially were all in the same markets as the former LFL teams, but under new team identities. The Nashville Knights（英语：） were the only team listed in the X League announcement to not change names, but they were replaced by the Kansas City Force（英语：） in January 2020. As part of the league restructuring, it began offering ownership stakes to its players and coaches based on the individuals contributions and commitment to the organization, as well as revenue distribution program for merchandise featuring an individual player's likeness.  The league also said it was to use 70-yard fields in a press release, although this was never implemented. The league implements a new uniform with full pads.
The league's first season was postponed to a scheduled start in June 2020 due to the 2019冠状病毒病疫情. In May, it had been announced that it was postponed again to April 2021. During the hiatus, the league announced Mike Ditka（英语：） had been named owner and chairman of the league, with plans on expanding into 24 US markets. The season was ultimately cancelled on May 18, 2021, pushing the league's relaunch to the summer of 2022 due to the pandemic.
The 2022 season began on June 10 with the Chicago Blitz（英语：） facing the Kansas City Force（英语：）. After a nine-week regular season with a total of seven games, four teams advanced to the playoffs, with the Blitz capturing the first X Cup title on September 10 when they defeated the Atlanta Empire（英语：）.
The league did not announce plans for a 2023 season and later updated their website with plans to announce a 2024 schedule in October 2023. This was later updated again to indicate a 2025 schedule, to be announced October 15, 2024