Rose ran in the preliminaries of the women 's 400 meters on Thursday and posted a fourth - place time of 54.37 .
Rose will represent the Tritons in a total of three events at the championships this weekend .
Rose , who will represent the Tritons in a total of three events at the championships this weekend , ran in the preliminaries of the women 's 400 meters on Thursday and posted a fourth - place time of 54.37 .