Toshikazu Yamanishi won his second straight men's 20-kilometer race walk world title Friday to become the first Japanese track and field athlete to win gold at consecutive world championships.His compatriot and last summer's Tokyo Olympics silver medalist Koki Ikeda claimed silver as Japan won its first medals at the ongoing worlds in Eugene, Oregon. Yamanishi was third at the Tokyo Games.Men's hammer thrower Koji Murofushi was the last Japanese athlete to claim an individual medal at two straight worlds when he won silver in 2001 and bronze in 2003.Yamanishi clocked a 1-hour, 19-minute, 7-…READ FULL ARTICLE