summer olympics competed summer olympics held beijing china country participation beijing marked seventh appearance summer olympics debut summer olympics delegation included track field athletes selected failed meet qualifying standards selected flag bearer opening ceremony progressed heats background participated seven summer olympic games debut summer olympics los_angeles united_states summer olympics beijing athletes selected compete beijing games track field meters track field meters selected places achieved qualifying standards respective events flag bearer opening ceremony athletics competed summer olympics meters notable carrying flag opening ceremony making debut summer olympics qualified place best time world championships athletics meters seconds slower qualifying standard required competed august seven athletes heat finishing seven finished time minute seconds seconds slower winner heat overall finished 61st athletes seconds slowest athlete progressed round end competition competing olympics qualified summer olympics place best time seconds world championships meters seconds slower qualifying standard required competed august heat athletes finishing time seconds seconds slower winner heat finished athletes seconds slowest athlete progressed quarter finals advance ranks given track events athlete heat qualified round qualified round fastest loser field events position achieving qualifying target national record round applicable event bye athlete required compete round
Mauritania at the 2008 Summer Olympics