Boris Berian after running 1:43.34 800m, now fifth-fastest American all-time

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Boris Berian finished fourth in the Monaco Diamond League 800m in 1:43.34, the fifth-fastest American mark of all-time. Berian came into 2015 as a 1:48 runner and with the help of his team, the Big Bear Track Club, he is now one of the fastest in the world.