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.