<Tr> <Th> Run 1 </Th> <Th> Run 2 </Th> <Th> Best </Th> <Th> Rank </Th> <Th> Run 1 </Th> <Th> Run 2 </Th> <Th> Run 3 </Th> <Th> Best </Th> <Th> Rank </Th> </Tr> <Tr> <Td> Chris Corning </Td> <Td> Men's slopestyle </Td> <Td> 70.85 </Td> <Td> 69.86 </Td> <Td> 70.85 </Td> <Td> 9 </Td> <Td_colspan="5"> Did not advance </Td> </Tr> <Tr> <Td> Red Gerard </Td> <Td> 82.55 </Td> <Td> 57.11 </Td> <Td> 82.55 </Td> <Td> 3 Q </Td> <Td> 43.33 </Td> <Td> 46.40 </Td> <Td> 87.16 </Td> <Td> 87.16 </Td> <Td> 01! </Td> </Tr> <Tr> <Td> Kyle Mack </Td> <Td> 45.26 </Td> <Td> 53.55 </Td> <Td> 53.55 </Td> <Td> 11 </Td> <Td_colspan="5"> Did not advance </Td> </Tr>

How many athletes from the united states are competing in the winter olympics