(STATS) -- As the FCS heads toward its final full weekend of the regular season, some head-to-head matchups within the STATS FCS Top 25 stand out for whats riding on them.It starts with No. 1 Sam Houston State and No. 2 Jacksonville State, which held those spots for the fifth straight week on Monday.Both teams will play the other top team in their respective conference, with an outright championship and automatic bid to the FCS playoffs at stake. In the MEAC, an outright title and a spot in the Celebration Bowl are on the line.Sam Houston State (10-0), which gained 108 of the 160 first-place votes and 3,873 points in this weeks national media poll, will host No. 11 Central Arkansas (9-1) in a matchup of unbeaten Southland Conference teams.It feels great to be 10-0, have a conference championship game coming up this weekend, Sam Houston coach K.C. Keeler said. As a player, as a coach, you dream about playing in a conference championship game. We get the chance to play in one.Jacksonville State (9-1), which has won 23 straight games in the Ohio Valley Conference, will try to complete a third straight unbeaten campaign in the conference when it hosts UT Martin (7-4), which is two spots outside the Top 25. A UT Martin win would create a shared title between the two teams.Supremacy in the MEAC will be decided when No. 9 North Carolina A&T (9-1) makes the short 55-mile trip from Greensboro to No. 24 North Carolina Central (8-2) in Durham.The three big matchups will help cap a memorable FCS regular season, which includes 10 teams posting wins over FBS opponents and more trying this weekend. The NCAA will announce the pairings of its 24-team FCS playoffs Sunday morning.The top six teams in the Top 25 held their rankings after each won a conference game by double-digits. After Sam Houston State and Jacksonville State, Eastern Washington (9-1) was third, five-time defending FCS champion North Dakota State (9-1) fourth, The Citadel (10-0) fifth and James Madison (9-1) sixth. The Citadel (Southern) and JMU (CAA Football) have clinched outright conference titles and automatic playoff bids.The Top 10 was rounded out by Richmond (8-2), South Dakota State (7-3), North Carolina A&T and North Dakota (9-2).After Central Arkansas, Chattanooga (8-2) fell five spots to No. 12 following a loss. Then it was Villanova (7-3), Charleston Southern (6-3), Youngstown State (7-3), Coastal Carolina (8-2), Grambling State (7-1), Samford (7-3), Lehigh (8-2) and Wofford (7-3), which beat Chattanooga and entered the rankings for the first time since Nov. 11, 2013.Cal Poly (6-4) slipped to No. 21 and was followed by Montana (6-4), Western Illinois (6-4), North Carolina Central and Saint Francis (7-3). N.C. Central and Saint Francis, the Northeast Conference champion, both reached the rankings for the first time in program history.New Hampshire, Harvard and Liberty fell from the Top 25 following losses. Three conferences tied for the most ranked teams with four -- the Big Sky, Missouri Valley and Southern.A national panel of sports information and media relations directors, broadcasters, writers and other dignitaries select the STATS FCS Top 25. In the voting, a first-place vote is worth 25 points, a second-place vote 24 points, all the way down to one point for a 25th-place vote.The Top 25 is released on Monday afternoons during the regular season, but next weeks will be out Sunday morning prior to the announcement of the playoff field.A final Top 25 will follow the FCS championship game, to be held Jan. 7 in Frisco, Texas. Philip Rivers Youth Jersey . Anthony Calvillo, through 20 CFL seasons, was frequently invincible and largely stoic in the heat of competition. 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World Rugby is clamping down on high tackles and is taking a zero-tolerance approach to any contact with the head.The games governing body has redefined illegal tackles with reckless tackles now being punished with the minimum of a yellow card. Any accidental contact with the head will trigger the minimum sanction of a penalty.The new rules come into effect on January 3, 2017, and effectively lowers the acceptable height of the tackle.World Rugby Chairman Bill Beaumont said: World Rugby continues to be proactive in aligning with the latest evidence-based recommendations in this priority player welfare area to ensure players and coaches at all levels of the game are appropriately educated, managed and protected when it comes to head impacts and injury within the environment of a contact sport.We believe that we are playing a leading role in terms of the development and implementation of best-practice interventions and this important study further reflects our commitment to an evidence-based approach to player welfare. We believe that tthe invaluable data from this study will inform the law review process and lead to changes in playing or training practices.ddddddddddddIreland prop Tadhg Furlong added: When it comes to protecting the head and neck of players, everyone is rightly very cautious now. The culture around concussion has completely changed and its no longer acceptable for players to continue in a game if theyre even suspected of having a concussion.When it comes to dealing effectively with concussion in sport, rugby is at the forefront. The International Rugby Players Association (IRPA) supports any measure that protects our welfare and we are in favour of this initiative, which we believe will help further to reduce head and neck injuries at all levels of the game.Rugby is a physical sport and there will always be a level of injury risk associated with it but the sport is doing as much as it can to make it as safe as possible. ' ' '