 With the accuracy of the timing systems , ties are rare . Ties between different athletes are resolved as follows : In determining whether there has been a tie in any round for a qualifying position for the next round based on time , a judge ( called the chief photo finish judge ) must consider the actual time recorded by the athletes to one thousandth of a second . If the judge decides that there has been a tie , the tying athletes must be placed in the next round or , if that is not practicable , lots must be drawn to determine who must be placed in the next round . In the case of a tie for first place in any final , the referee decides whether it is practicable to arrange for the athletes so tying to compete again . If he decides it is not , the result stands . Ties in other placings remain . 
 With the accuracy of the timing systems , ties <a href='drop_aux' title='1'><mark>are</mark></a>rare . Ties between different athletes are resolved as <a href='uninflect' title='2'><mark>follows</mark></a> : In determining whether <a href='dey_it' title='3'><mark>there</mark></a> <a href='uninflect' title='4'><mark>has</mark></a> been a tie in any round for a qualifying position for the next round based on time , a judge ( called the chief photo finish judge ) must consider the actual time recorded by the athletes to one thousandth of a second . If the judge <a href='uninflect' title='5'><mark>decides</mark></a> that <a href='dey_it' title='6'><mark>there</mark></a> <a href='uninflect' title='7'><mark>has</mark></a> been a tie , the tying athletes must be placed in the next round or , if that <a href='negative_concord' title='8'><mark>is</mark></a> <a href='negative_concord' title='9'><mark>not</mark></a>practicable , lots must be drawn to determine who must be placed in the next round . In the case of a tie for first place in any final , the referee <a href='uninflect' title='10'><mark>decides</mark></a> whether it is practicable to arrange for the athletes so tying to compete again . If he <a href='uninflect' title='11'><mark>decides</mark></a> it <a href='negative_concord' title='12'><mark>is</mark></a> <a href='negative_concord' title='13'><mark>not</mark></a>, the result <a href='uninflect' title='14'><mark>stands</mark></a> . Ties in other placings remain . 
Witt da accuracy of the timing systems , ties rare . Ties between diff athletes are resolved as follow : In determining whether it have been a tie in any round for a qualifying position for the next round based on time , a judge ( called tdachief photo finish judge ) must consider the actual time recorded by the athletes to one thousandth of a second . If thdaudge decide dat it have been a tie , the tying athletes must b placed in the next round or , if tdatain't practicable , lots must bbdrawn to determine who must be placed in the nxt round . In the case of a tie for first place in any final , the referee decide whether it is practicable to arrange fir thedahletes so tying to compete again . If he decide it ain't , the result stand . Ties in other placings remain .