NFHS / Pro Rules Differences

Baseball
compiled & edited by Steve Orinick

Beginning with the 20 major rules differences in the Federation rulebook, this umpiring aid was originally expanded some time ago by adding rule excerpts to the simple list to assist High School umpires working baseball under Pro rules.  I have extended the content significantly, attempting to be as all-inclusive as possible.  I would like to thank Bruce Grossberg of the BCUA for his assistance in pointing out additional differences.  I would appreciate an Email if you can add to the list.

NFHS Baseball / Softball Rules Differences

NFHS Rules    /    Official Baseball Rules

RULE
Reference
Reference
RULE
Legal Bat.  Non-wood bats must meet BESR / BBCOR (2012) standard
13-2.3.4, 1-3-2
1.10
Maximum diameter 2 3/4 inches, no length minus weight differential. Wood only. No BESR / BBCOR
   
Intentional base on balls.  Dead ball award
2-4-3
6.08(a)
Pitches must be thrown
   
Obstruction: Always a delayed dead ball. Any obstruction entitles runner to minimum of one base beyond last base safely reached
2-22-1
7.06
If no play is being made on obstructed runner, award if necessary.  If play is made on obstructed runner, ball becomes dead and runner is awarded a minimum of one base.  Dead ball immediately if the batter-runner is obstructed before reaching 1st base
 
Illegal slide 
2-32
No rule
Interpretation is that the runner must be able to reach the base with a hand or foot or it is interference.  Can't roll block or throw cross body block
 
Illegal to dive over fielder 8-4-2d No rule  
   
Re-entry of players
3-1-1
No rule
No re-entry permitted
   
Designated Hitter for any player
3-1-4
6.10(b)
No DH, NL. Pitcher only, AL. Pitcher may only bat in same slot in order if enters game as batter or runner for DH.  If DH enters game on defense, pitcher must bat in slot vacated by player replaced on defense
   
Fielder without ball fakes tag
3-3-1a, 8-3-2
No rule
Permitted           
   
Malicious contact
2-21-1b,3-3-1n
No rule
 
   
Umpire discipline of coach
3-3-1 Penalty
9.01(d)
Ejection. No restriction to dugout
   
Team warnings
3-3-1 Penalty
No rule
   
Defensive conferences
Pitcher must be removed on 4th trip. Can have 3 conferences in 1 inning with no pitching change.
3-4-1 Penalty
8.06(b)
The second trip to the same pitcher in the same inning results in the pitcher's removal from the game. After conference with pitcher is complete, pitcher must complete pitching to current batter or retire the side before he can be removed, unless offense pinch-hits after conference
   
Offensive conferences
3-4-2
No rule
 
Finishing game with 8 players
4-4-1f
No rule
Must field 9 players at all times or forfeit game
 
Umpire handles live ball: Ball immediately dead
5-1-1h
5.10(e)
No effect on play if immediately released, ball remains live
   
Balk: Ball immediately dead
5-1-1k
8.05 Penalty
If balk is followed by a pitch, play continues.  If all runners including the batter-runner advance at least one base, balk is nullified, runners liable to be put out.  If  there is a balk to a base and ball is thrown to the base, ball remains alive. If runner from first advances to second and continues to third while missing second, he is out on appeal
   
If a pitcher is ambidextrous, the umpire shall require the pitcher to face a batter as either a left-handed pitcher or a right-handed pitcher, but not both
6-1-1
8.18 PBUA Umpire Manual
Pitcher must visual indicate which way he will pitch...pitcher must throw one pitch to the batter before any "switch" by either player is allowed...
Click here for story behind rule
   
Allowable movements from the windup position: Can't throw to a base without stepping back off the runner
6-1-2
8.01(a)
The Windup Position...
   
Batter is out for hitting ball w/foot completely out of the box OR stepping on home plate: (heel on line, foot on plate... out)*
7-3-2
6.06(a)
Batter is out for hitting ball with entire foot out of box
*thanks to Terry Calhoun, LA, Calif.    
Missed base or leaving too soon on a caught ball 8-2 Penalty 7.10 No verbal appeals.  No dead ball appeals.  Must throw to base while time is in.  If defense attempts a play, even if initiated by the offense, they lose the right to appeal.  Feint of a throw is not a play.  Throw to retire a runner is a play
  
Fielder steps into dead ball territory after catch: Each runner awarded one base 8-3-3d 5.10(f), 7.04(c) Any boundary lines are out of play.  To make a catch the fielder must have both feet in live area.  If catch is made in live area and fielder enters dead ball area while standing ball remains live.  It becomes dead if any part of the body, other than hands or feet, touches ground in dead area
 
Runner struck with a fair batted ball while in foul territory: Runner is out if contacted by a fair batted ball. 8-4-2k 7.08(f) Ball remains in play, runner is not out. Runner is out if "He is touched by an a fair ball in fair territory."
 
Runner shall slide or avoid contact on a force or tag play 8-4-2b,c,d,e,f No rule
 
Interference on a double play attempt 8-4-2g 7.09(g) Interference must be willful and deliberate for a double play to be called.  Otherwise, only the runner is out.  If interference is on the first play, runners return to base occupied at time of pitch
 
Pitcher may wear two-tone glove (no white or grey)   1.15 Glove must be uniform in color, including all stitching, lacing and webbing, not distracting
 
Pitcher wearing batting glove: Pitcher may wear batting glove if not distracting to the batter 1-4-2 3.12 - PBUA Umpire Manuel Pitcher may not wear batting glove  while pitching
 
Winning starting pitcher must pitch 4 innings 9-6-6a 10.19(a) Winning starting pitcher must pitch 5 innings
 
Pitcher must wipe hand after going to mouth 1-2-1e 8.02(a)  Effective in 2010 pitcher may go to mouth if not in contact with pitcher's plate and clearly wipes the fingers dry
   
Base coaches: "One player or coach may occupy each coach's box..." 3.21 4.05(a) "The offensive team shall station two base coaches...".  Implies that the offensive team must have two base coaches
 
No jewelry permitted 3-3-1c 3.15 PBUA Umpire Manual No "distracting" jewelry
 
Courtesy runner for pitcher or catcher 2-33-1 No rule Not permitted
     
7 inning game 2-17-1 4.10 (a-d) 9 inning game
     
"Mercy" (10 run) rule 4-2-2 No rule  
 
Verbal obstruction 2-22-1 No rule  
     
Tobacco chewing illegal 3-1p No rule No longer permitted in Minors
 
No bowling over catcher 8-4-2f No rule  
 
Defense in fair territory at time of pitch with one foot in fair territory     Two feet necessary
 
Catcher's helmet testing restrictions-must be full helmet or two piece tested together, full ear protection, NOC-SAE standard 1-4-8 No rule Ear protection not required, no testing standards
 
Game called after visiting team takes lead or ties the score in top half of inning, score reverts back to last completed inning   4.12(5i) Game is suspended
 
Check swing appeal, not required   9.02(c) notes If requested by catcher or manager, plate umpire must ask for help
 
Batter interference on strike 3 with runner stealing, batter is out, runner may be called out     Batter and runner automatically out
 
Batter must have one foot in batter's box at all times (see exceptions).  Leaving box with both feet and delaying game results: called strike 7-2-1(e) No rule  
 
Ball hit over any fence is a home run   1.04  Ball hit over fence less the 250 feet from plate can be a ground rule award
       
Assistant coach leaving dugout or coaching box to argue: he and head coach restricted to bench 3-2-3 No rule  

Have another difference?  Email Steve with the rule references for inclusion.

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