<Tr> <Td> 1950 </Td> <Td> January 14, 1951 </Td> <Td> American Conference 28, National Conference 27 </Td> <Td> AC, 1--0 </Td> <Td> Otto Graham, Cleveland Browns, Quarterback </Td> <Td> Los Angeles Memorial Coliseum </Td> <Td> 53,676 </Td> <Td> AC: Paul Brown, Cleveland NC: Joe Stydahar, Los Angeles </Td> <Td> </Td> </Tr> <Tr> <Td> 1951 </Td> <Td> January 12, 1952 </Td> <Td> National Conference 30, American Conference 13 </Td> <Td> Tied, 1--1 </Td> <Td> Dan Towler, Los Angeles Rams, Running back </Td> <Td> Los Angeles Memorial Coliseum </Td> <Td> 19,400 </Td> <Td> AC: Paul Brown, Cleveland NC: Joe Stydahar, Los Angeles </Td> <Td> NBC </Td> </Tr> <Tr> <Td> 1952 </Td> <Td> January 10, 1953 </Td> <Td> National Conference 27, American Conference 7 </Td> <Td> NC, 2--1 </Td> <Td> Don Doll, Detroit Lions, Defensive back </Td> <Td> Los Angeles Memorial Coliseum </Td> <Td> 34,208 </Td> <Td> AC: Paul Brown, Cleveland NC: Buddy Parker, Detroit </Td> <Td> NBC </Td> </Tr> <Tr> <Td> 1953 </Td> <Td> January 17, 1954 </Td> <Td> East 20, West 9 </Td> <Td> Tied, 2--2 </Td> <Td> Chuck Bednarik, Philadelphia Eagles, Linebacker </Td> <Td> Los Angeles Memorial Coliseum </Td> <Td> 44,214 </Td> <Td> EC: Paul Brown, Cleveland WC: Buddy Parker, Detroit </Td> <Td> DuMont </Td> </Tr>

Who are the head coaches for the pro bowl