He was the bronze medallist at the 2005 worlds in Helsinki .
In the men 's 400 , Christopher conserved his energy as much as possible in the stifling heat and still won his round in 45.15 seconds to advance .
Christopher was the bronze medallist at the 2005 worlds in Helsinki .
In the men 's 400 , Christopher conserved his energy as much as possible in the stifling heat and still won his round in 45.15 seconds to advance .