In NCAA football, is it illegal to to tackle a person from behind when they don't have the ball?
922002
oh yes it is they can get penalized either 1 or 2 ways either by unneccesary roughness or unsportsmanlike conduct and could even get ejected from the game depending on the official that's a nono you can only tackle a person from behind if they have the ball and you're behind them but not without the ball
817117
First, definitely play lacrosse in the off-season.  Especially if you are a fullback, this will help your speed and agility in football.\n\nAs far as "running over someone while you have the ball" you can't really.  I'm not sure if you are in high school or college, but I'll assume high school.  Therefore, the rule is:\n\n"Body checking is permitted in Senior & Junior Divisions, however, no take-out checks are permitted by any player. Definition-Take-out checks: Checks in which the player lowers his head or shoulder with the force and intent to take out (*put on the ground) the other player."\nhttp://www.uslacrosse.org/the_sport/boys_rules.phtml\n\nIf you are in college though and play men's lacrosse, the rules bend a bit more.  Each of the following are personal fouls:\n\nUnnecessary Roughness: Occurs when a player strikes an opponent with his stick or body using excessive or violent force.\nIllegal Body Checking: Occurs when any of the following actions takes place:\na. body checking an opponent who is not in possession of the ball or within five yards of a loose ball.\nb. avoidable body check of an opponent after he has passed or shot the ball.\nc. body checking an opponent from the rear or at or below the waist.\nd. body checking an opponent above the shoulders. A body check must be below the shoulders and above the waist, and both hands of the player applying the body check must remain in contact with his crosse."\nhttp://www.uslacrosse.org/the_sport/mens_rules.phtml\n\nHave fun!
649927
When the offensive player goes past the last defensive player on the opposing team (not including the goalie) without the ball.  \n\nIf you have the ball you may go passed any and all players.
978876
in the past 20 years or so, a specific rule was added that if the QB took the snap and immediately threw the ball down it would result in an incomplete pass with no penalty.  if the QB takes two steps back, however, intentional grounding can be assessed.
40380
It's basically the same as for a normal pass, linemen aren't allowed to go past the line of scrimmage, though they usually get a couple yards cushion, until the ball is passed or ran past the line of scrimmage.  Also offensive linemen can be called for illegal man downfield if they touch a pass before another player on the field does.
485107
if the offense is behind the defense before the ball
967673
You asked a ton of questions! Here goes.\n\n1. It is not a foul if you hit the ball away from opponent's hand, assuming you only made initial contact with the ball, and not the opponent's hand nor other body parts in the process.\n\n2. Player with ball can not push the opponent. \n\n3. Player can attempt to take the ball away from any position, assuming they only make initial contact with the ball, and don't make contact with the ball holder's hand, body, etc.\n\n4. Kicking the ball accidently results in a stoppage of play. The team that did not kick the ball gets possession.  It is not considered a personal foul.\n\n5. It is legal, thus not a foul, to throw the ball at any bodypart of the  opponent in the hopes of it going out of bounds to maintain posession.  It would be considered good sportsmanship to try to avoid throwing the ball at the face and/or sensitive reproductive organs of the opponent.
1063455
Uhhh thats such a complicated rule to explain... lol ill attempt.... You are ruled offsides anytime your behind the last defender on the opposing team... You are allowed to be offsides as long as the ball doesnt come to you or as long as you are not involved in the play... If the ball comes to you and you are offsides the line judge will raise his flag and rule you offsides...you can receive the ball offsides if you are onsides when the ball is kicked and you run to the ball from an onsides to an offsides positions... Hope this helped a little... also you are not offsides if you receive the ball directly from the goalkick, throw-in or corner kick... this site may also help you http://www.decatursports.com/articles/offsides.htm
792278
G'day Antwaan M,\n\nThank you for your question.\n\nRoughing the kicker is a more serious offence. Roughing the kicker is defined as "Flagrantly running into or hitting the kicker after the ball has been kicked." It results in a 15 yard penalty against the offending team and automatic first down. It can even result in disqualification if particularly flagrant.\n\nRunning into the kicker is defined as "Making incidental contact with a placekicker or punter after the ball has been kicked. " It is a five yard penalty.\n\nIt was originally all defined as the one offence before running into the kicker was created in the 1980s for less serious offences.\n\nI have attached sources for your reference.\n\nRegards
330624
in the nfl, this is a tricky one.  The trap requires a "down block" by the lineman that sets the hole and a "kick-out block/ hook block" by the pulling lineman.  As long as both blocks are made legally (no chop, holding, etc.) the trap is a legal play.  to further specify a chop block is when an engaged defensive player (already being blocked) is hit below the waist by another blocker... the old high/low!
1084409
vegeta_ss_j...There's no such thing as a "blocking foul" There is "impeeding the progress of an opponent" but that would result in an indirect free kick, not a direct.\n\nRob...if you referee at a national level, then your explinations are lacking in substance or propper information. If you are going to call the Australian player for "impeeding" (hasn't been called "obstruction" for a while), it would result in an indirect kick. Also, if the call was "denying an obvious goal scoring opportunity" (has never been referred to as "taking away" a "scoring chance") then why were there no cards issued?  Denying an obvious goal scoring opportunity is an automatic red (no choice whatsoever). There wasn't even a yellow card pulled on that play.\n\nThe call was either for tripping, or you could possibly argue the point that the referee had waited to call the first contact to see if advantage would develop, then went back to call the first foul when the advantage was gone, but that is pushing it. There had been much harder contact that had gone unchecked and when there's a foul in the penalty area, the most adventagious thing to do (unless the ball is literally on the way into the goal) is to give the penalty kick.
791719
No - pass interference requires contact during the flight of the ball.\n\nHere is the exact list of violations from the NFL that constitute defensive pass interference:\n\nActions that constitute defensive pass interference include but are not limited to:\n\n(a) Contact by a defender who is not playing the ball and such contact restricts the receiver’s opportunity to make the catch.\n\n(b) Playing through the back of a receiver in an attempt to make a play on the ball.\n\n(c) Grabbing a receiver’s arm(s) in such a manner that restricts his opportunity to catch a pass.\n\n(d) Extending an arm across the body of a receiver thus restricting his ability to catch a pass, regardless of whether the defender is playing the ball.\n\n(e) Cutting off the path of a receiver by making contact with him without playing the ball.\n\n(f) Hooking a receiver in an attempt to get to the ball in such a manner that it causes the receiver’s body to turn prior to the ball arriving.
54304
Once a player on the offense is set, he cannot move before the snap of the ball.  If he does, that is a penalty called false start.  It's a 5 yard penalty.
747900
obstruction whether it is meant or not. player b awarded an indirect free kick. the time when this rule is most abused(ignored by refs)is when a player is "sheilding" a ball to run out of play.the defender hasn't touched it so its not in his control,and he blatently obstructs a forward from playing the ball with no intention of playing it himself.
1111455
A crackback is a term used in American Football refering to a block on an opponent from the rear and below the waist...it is illegal.
883649
Once a ball is punted with a snap from the line of scrimmage, the possesion is changed unless touched by the receiving team.  This holds whether the punting team downs the ball after rolling or catches it on the fly.  The only way that the punting team can re-gain possession is (1) if the returner "muffs" the punt (when the ball hits off of him without him catching it) or (2) the ball in-advertently hits another member of the returning team and then gets recovered by the punting team.  \n\nOf course if the returning team tries to block the punt and misses and in the process knocks over the punter, it results in a 15 yard personal foul which brings an automatic first down with it.\n\nIf it is the kickoff (either at the start of a half or after a score) that whoever ends up with the ball at the end of the play has possession of the ball.\n\nExample: On a kickoff, the ball could be kicked deep to the returning team, they catch the ball and get tackled resulting in their first down at that spot.  BUT, If the kick is popped up short and the kicking team catches the ball, it is THEIR ball, 1st down at the spot that they catch it.  The kicking team cannot advance the ball once they gain possession.
641633
You only get called for sliding into others/punching people if intentional. You are only allowed to use your hands inside the 18 yard box. your are only allowed to hold the ball (distribution wise) for 6 seconds.