Jan Leschly has been dominant on hard, posting 29–9 across 38 matches (76.3% — exceptional). Few players in the Open Era have sustained that level of dominance across a full career on hard. Claimed 2 titles on hard: Cape Town-1, Macon.

2 finals reached on hard — converted 2 into titles (outstanding 100% conversion rate). Converting finals at that rate separates champions from contenders. 3 semifinals. 6 quarterfinals.

By format on hard — best-of-five: 10–4 (71.4%); best-of-three: 19–5 (79.2%). Slightly stronger in three-set contests on hard, though the five-set record is still respectable.

Peak season: 1968 — 18–3 (85.7%) from 21 matches. That year captures the ceiling of what Jan Leschly can do on hard when performing at their best and represents the standard to aim for.

Jan Leschly put together an impressive 8-match winning streak on hard, highlighting the ability to maintain high performance across multiple tournament rounds and events.