Hmmm...
FWIW, I think the pitched referred to here as ephus and Chinese change up is illegal (in ASA) based on the following.
Rule 6 Pitching regulations (fast pitch)
Sec 3 Legal Delivery
G. The release of the ball and follow through of the hand and wrist must be forward and past the straight line of the body.
Page 63 of the 2014 Participant Manual (rule book)
M. The pitcher shall not make another revolution after releasing the ball
Page 64 of the 2014 Participant Manual
Effect: Any violation of A-N is an illegal pitch
FWIW, I think the pitched referred to here as ephus and Chinese change up is illegal (in ASA) based on the following.
Rule 6 Pitching regulations (fast pitch)
Sec 3 Legal Delivery
G. The release of the ball and follow through of the hand and wrist must be forward and past the straight line of the body.
Page 63 of the 2014 Participant Manual (rule book)
M. The pitcher shall not make another revolution after releasing the ball
Page 64 of the 2014 Participant Manual
Effect: Any violation of A-N is an illegal pitch