Coaches who know umpiring

[JR12]

#5. In the OBR it says nothing about wiping off, only that you not be in the 18" circle.

8.02
The pitcher shall not --
(a) (1) Bring his pitching hand in contact with his mouth or lips while in the 18 foot circle surrounding the pitching rubber. EXCEPTION: Provided it is agreed to by both managers, the umpire prior to the start of a game played in cold weather, may permit the pitcher to blow on his hand.
PENALTY: For violation of this part of this rule the umpires shall immediately call a ball. However, if the pitch is made and a batter reaches first base on a hit, an error, a hit batsman or otherwise, and no other runner is put out before advancing at least one base, the play shall proceed without reference to the violation. Repeated offenders shall be subject to a fine by the league president.
(2) expectorate on the ball, either hand or his glove;
(3) rub the ball on his glove, person or clothing;
(4) apply a foreign substance of any kind to the ball;
(5) deface the ball in any manner; or
(6) deliver a ball altered in a manner prescribed by Rule 8.02(a)(2) through (5) or what is called the “shine” ball, “spit” ball, “mud” ball or “emery” ball. The pitcher is allowed to rub the ball between his bare hands.
PENALTY: For violation of any part of Rules 8.02(a)(2) through (6)
(a) the pitcher shall be ejected immediately from the game and shall be suspended automatically. In National Association Leagues, the automatic suspension shall be for 10 games.