LAS VEGAS, NEV. (March 21, 2017) — Teiken Promotions and Top Rank®, have begun negotiations for the vacant World Boxing Association (WBA) middleweight world title between interim WBA middleweight champion Hassan N’Dam and undefeated No. 2 world-rated contender Ryota Murata. “While N’Dam wants the fight to take place in France, Mr. Honda and I think …