John van Lottum has found the Tour difficult, recording 62–100 across 162 matches (38.3%). The numbers point to a player still building their Tour presence — a key area of opportunity going forward.
At Grand Slam level (Australian Open, Roland Garros, Wimbledon, US Open): John van Lottum has struggled at Grand Slam level: 13–21 (38.2%) in 34 matches. The best-of-five format and elite fields make this the toughest benchmark on Tour.
ATP Masters 1000 (Indian Wells, Miami, Monte Carlo, Madrid, Rome, Canada, Cincinnati, Shanghai, Paris): John van Lottum is 4–7 (36.4%) across 11 Masters matches — below .500 in the Tour's deepest fields. Lifting that record here would unlock better results across the calendar.
vs. Top 10: 1–9 (10.0%, 10 matches). Top 10 opponents have represented a clear ceiling; addressing that deficit is the single biggest lever for improving the overall record.
By format — best-of-five: 13–23 (36.1%); best-of-three: 49–77 (38.9%). Slightly stronger in three-set contests, though the five-set record is still respectable.
Peak season: 1999 — 21–22 (48.8%) from 43 matches. That year captures the ceiling of what John van Lottum can do when performing at their best and represents the standard to aim for.