By ITTF regulation, is it legal to hold a paddle with two hands?
On one serve, someone managed to return by using his normal hand with the addition of his other to stabilize the paddle better. Is that legal?
In ITTF guidelines it says
2.5.5 The racket hand is the hand carrying the racket.
2.5.6 The free hand is the hand not carrying the racket; the free arm is the arm of the free hand.
2.5.7 A player strikes the ball if he or she touches it in play with his or her racket held in the hand, or with his or her racket hand below the wrist.
However it fails to say that both hands can't be the racket hand.