Ramba uchiverenga ndima iyi - Marshall akamiririra United States paMitambo yeOlympic yeZhizha ya2008 muBeijing, kuChina. Akagamuchira menduru yebronze nokushambira nokuda kwechikwata cheU.S. chakava nenzvimbo yechitatu mumatambo okutanga evakadzi ve4 × 200 metres freestyle relay
. Iye nevamwe vake veboka rokutanga vakagadza chinyorwa chitsva cheAmerica muchiitiko chacho.