The XFL’s official rulebook includes more than two dozen changes to the conventional approach of pro football, according to league officials who are rolling out the specifics this week.

Most of the tweaks, such as a running game clock and a three-tiered extra point, are focused on accelerating the pace of games and elevating interest in traditionally tedious plays.

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The XFL’s eight teams opened training camp this week and will kick off their 10-week regular season Feb. 8. Most of the on-the-field product will look familiar to fans, but a two-year project to innovate some aspects of the game led to a number of significant changes.

Flip the Pages to see the Rules and more: