Jakob Hlasek holds a solid hard court record of 153–122 across 275 matches (55.6%). A winning majority across 275 matches shows consistent ability to get results on hard. Claimed 2 titles on hard: Johannesburg, Basel.

At Grand Slam level (Australian Open & US Open): Jakob Hlasek is 17–19 (47.2%) across 36 Grand Slam matches — below .500, though the elite draw depth at the Slams makes that a notoriously difficult barrier to crack.

ATP Masters 1000 on hard (Indian Wells, Miami, Canada, Cincinnati, Shanghai, Paris): a positive 31–19 (62.0%) across 50 matches — winning above .500 at this level, week in week out, is a genuine sign of quality on hard.

4 finals reached on hard — won 2, lost 2 (solid 50% conversion) — consistently getting to finals and winning the majority is a hallmark of elite performers on hard. 11 semifinals. 26 quarterfinals.

vs. Top 10 on hard: 5–30 (14.3%, 35 matches). Top 10 opponents have represented a clear ceiling on hard; addressing that deficit is the single biggest lever for improving the overall record here.

By format on hard — best-of-five: 30–29 (50.8%); best-of-three: 123–93 (56.9%). Slightly stronger in three-set contests on hard, though the five-set record is still respectable.

Peak season: 1988 — 22–7 (75.9%) from 29 matches. That year captures the ceiling of what Jakob Hlasek can do on hard when performing at their best and represents the standard to aim for.