Sports from around the globe. Clinton Graham Walker hosts with Christian Hosoi whom, emerged as one of the top competitors of vertical riding in the 1980'sSports from around the globe. Clinton Graham Walker hosts with Christian Hosoi whom, emerged as one of the top competitors of vertical riding in the 1980'sSports from around the globe. Clinton Graham Walker hosts with Christian Hosoi whom, emerged as one of the top competitors of vertical riding in the 1980's