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Esther Vergeer, the legendary Dutch wheelchair tennis player, reached the pinnacle of her sport when she first attained the coveted World No. 1 ranking on April 6, 1999. This hard-fought milestone marked the commencement of her remarkable reign, which saw her maintain the top spot for a staggering 13 consecutive years, solidifying her status as one of the greatest and most dominant athletes in the history of wheelchair tennis.