Leaders Machida Zelvia were held to a 0-0 draw at home to Avispa Fukuoka on Saturday as the J-League first-division season reached its midway point. The J1 debutants Machida had a tough test against a battling Fukuoka side who had won their last three games, but did enough to secure a point at western Tokyo’s Machida Gion Stadium that lifted them up to 39 points from 19 games. “We’ve been giving away lots of goals lately, so I want to take positives from not conceding,” captain and former Japan defender Gen Shoji said after Machida’s first clean sheet in four games. “It’s not a coincidence we’…