 unranked (or the best rank).</li>
									<li><b>prev_at</b> <span>(int)</span> &mdash; The position of the worst player in the user's current rank, dip below them to go down a rank. -1 if unranked (or the worst rank).</li>
									<li><b>percentile</b> <span>(float)</span> &mdash; This user's percentile position (0 is best, 1 is worst).</li>
									<li><b>percentile_rank</b> <span>(string)</span> &mdash; This user's percentile rank, or Z if not applicable.</li>
									<li><b>glicko</b>? <span>(float