TOKYO: Sydney McLaughlin obliterated her own world record to win Olympic gold in the women’s 400m hurdles on Wednesday as Japanese teenager Sakura Yosozumi maintained the hosts’ stranglehold on the skateboarding competition.Elsewhere on day 12 of action in Tokyo, the Netherlands dumped defending champions Britain out of the women’s hockey while the women’s golf got under way in sweltering conditions.At the Olympic Stadium, McLaughlin powered home in 51.46 seconds, with defending...