Thompson began her move with her first birdie of the day at the sixth and she added another at the next before reeling off four in six holes after the turn .
A poor tee - shot at the short 16th cost Thompson a share of the lead .
Thompson began her move with her first birdie of the day at the sixth and she added another at the next before reeling off four in six holes after the turn , although a poor tee - shot at the short 16th cost her a share of the lead .