Original sentence: Ama is a relative lightweight (currently the second lightest wrestler in the makuuchi division) and is known for his speed, particularly at the tachi-ai, or initial charge
Edited sentence: Because he is relatively lightweight (currently the second lightest wrestler in the makuuchi division) and very fast, Ama has been accused of using henka (sidestepping) to wrong-foot his opponent.These accusations have not held up under scrutiny