The 2025 ATP season delivered surprises, but not every star met expectations. Some players struggled with consistency, injuries, or early exits in big tournaments that made them ATP Tour underachievers in 2025.
Here are five ATP Tour underachievers for 2025, each showing talent but falling short of their potential.
🇬🇷 Stefanos Tsitsipas— Falling Fast!
Former Australian and French Open finalist Stefanos Tsitsipas opened the season just outside the Top 10, but his ranking dropped to No. 34 heading into 2026.
Tsitsipas posted a 2–4 Grand Slam record, failed to reach a semifinal in seven Masters 1000 events, and went 0–5 against Top 20 opponents. Injuries played a role, but questions around his coaching setup and racquet changes loomed even larger.
If Tsitsipas wants to return to the Top 10 conversation, 2026 requires a reset — both mentally and structurally.
2025 Stats — Stefanos Tsitsipas
| Category | Record / Result |
|---|---|
| Grand Slam Record | 2–4 |
| Masters 1000 Record | 8–7 |
| Davis Cup Record | 1–1 |
| Finals | None |
| Titles | None |
| Record vs Top 20 | 0–5 |
| Year-End Ranking | No. 34 |
🇺🇸 Frances Tiafoe — Flashes Without Follow-Through
Frances Tiafoe began the season in the Top 20 but ended at No. 28 due to inconsistency. He went 0–6 against Top 20 and 1–15 after dropping the first set.
Tiafoe shortened his post-US Open schedule and brought in Todd Martin as coach, hoping to capture his first title since June 2023.
2025 Stats — Frances Tiafoe
| Category | Record / Result |
|---|---|
| Grand Slam Record | 8–4 |
| Masters 1000 Record | 9–8 |
| Davis Cup Record | 0–2 |
| Finals | Houston |
| Titles | None |
| Record vs Top 20 | 1-7 |
| Record After Losing Set 1 | 1–15 |
| Year-End Ranking | No. 30 |
🇦🇷 Tomas MartĂn Etcheverry — Consistency Needed
Tomas Martin Etcheverry fell outside the Top 50 after a 2–4 Grand Slam record and a 30–33 overall season. He struggled 1–7 against Top 50 players and hasn’t reached a final since Houston 2023.
A midsection injury at the US Open slowed him, but he finished his 2025 campaign on a promising 4–2 run.
2025 Stats — Tomas MartĂn Etcheverry
| Category | Record / Result |
|---|---|
| Grand Slam Record | 2–4 |
| Masters 1000 Record | 7-8 |
| Davis Cup Record | 3-1 |
| Finals | None |
| Titles | None |
| Record vs Top 50 | 6-19 |
| Overall Record | 30–33 |
| Year-End Ranking | No. 60 |
đź‡đź‡ş Fabian Marozsán — Masters Threat, 2025 Dip
Hungarian Fabian Marozsán boasts a 28–18 career record at Masters 1000 events, but 2025 was a rough year. He finished 28–26 overall and 7–7 at Masters events, struggling for consistency against Top 50 players (13–20 record).
He hasn’t won a title since June 2023, though he ended the 2025 season with a 5–4 stretch.
2025 Stats — Fabian Marozsán
| Category | Record / Result |
|---|---|
| Grand Slam Record | 4-4 |
| Masters 1000 Record | 9-9 |
| Career Masters Record | 28–18 |
| Davis Cup Record | 1–2 |
| Finals | None |
| Titles | None |
| Record vs Top 50 | 13–20 |
| Overall Record | 28–26 |
| Year-End Ranking | No. 51 |
🇫🇷 Ugo Humbert—Fading Fast
Ugo Humbert started the season in the Top 15 but fell to No. 37 after injuries and inconsistent play. He went 4–4 in Grand Slams, 3–7 at Masters, and 2–6 vs Top 20 opponents.
He did win Marseille and reached the Stockholm final, showing glimpses of his talent. A reunion with coach Jérémy Chardy could help him return to the Top 15 in 2026.
2025 Stats — Ugo Humbert
| Category | Record / Result |
|---|---|
| Grand Slam Record | 4–4 |
| Masters 1000 Record | 3–7 |
| Davis Cup Record | 1–0 |
| Finals | Stockholm, Marseille |
| Titles | Marseille |
| Record vs Top 20 | 2–6 |
| Year-End Ranking | No. 37 |
