Another race, another junior record for Wang

China’s Wang Jianjiahe underlined her status as an emerging star when the 15-year-old eclipsed her own world junior record by winning Saturday’s 800m freestyle in 8:12.30 on the second day of the FINA/airweave Swimming World Cup at the Water Cube in Beijing. Teammate Hou Yawen took the silver in 8:15.04. Wang set the previous mark of…