Ryoyu Kobayashi made history on Sunday when he completed a grand slam at the Four Hills Tournament and became the first Japanese overall champion of the famous week-long ski jumping competition in over two decades.The 22-year-old Kobayashi followed in the footsteps of Sven Hannawald of Germany in 2001-2002 and Poland's Kamil Stoch in 2017-2018 by pulling off a clean sweep of all four events in the prestigious tournament held on jumping hills in Germany and Austria.
