Legal delivery??

CecilOne is correct. The term "presented" is mainly used in LL (not sure I like the word "only" )

LL rules state that the pitcher "...shall hold the ball in one or both hands in front of the body for not less than one second and not more than 10 seconds before starting the delivery." Rule 8.01(f)

For those interested, NCAA rules state " After receiving the catcher's signal, the pitcher's hands must come together in view of the plate umpire for no more than 10 seconds." Rule 10 Section 2c

As for ASA, well, CecilOne already stated that one. No where in rule book does it state that pitcher has to hold the ball in front of body. Of course, since it says that the pitcher shall hold the ball on both hands, hope you're working a 2-man. Be kinda hard for PU to determine if pitcher did in fact hold ball with both hands when she's bringing her arms behind her back.