 Complete the following phrase:  The Latvian roster featured two returning Olympic medalists from London, namely beach volleyball player Jānis Šmēdiņš and two-time defending BMX champion Maris Strombergs. Hunting for his third consecutive gold medal in Rio de Janeiro, Strombergs was selected to lead the Latvian delegation as the flag bearer in the opening ceremony. Distance runner Jeļena Prokopčuka came out of retirement to run for the 