The International Tennis Federation (ITF) and the Women's Tennis Association (WTA) provide player profiles that include height measurements. These figures are typically gathered during pre‑season medical assessments or at tournament registration, and they can vary slightly from one source to another. For Leylah Fernandez, most reputable listings place her at 5 feet 10 inches (178 cm), a figure that aligns with her own statements in interviews and the official WTA database.
However, height is not a fixed constant. Factors such as posture, footwear, and measurement technique introduce a margin of error that can amount to several centimeters. Consequently, the listed height should be treated as an estimate rather than a precise datum, and any analysis built on it must account for this uncertainty.