Sports Bull rider Mason Lowe, No. 18 in world, dies after bull steps on his chest at PBR event January 16, 2019Tom Schad, USA TODAYComments Off on Bull rider Mason Lowe, No. 18 in world, dies after bull steps on his chest at PBR event Professional bull rider Mason Lowe, ranked No. 18 in the world, died Tuesday after the bull he was riding stepped on his chest at PBR event in Denver.