H2H data updated: 2026-09-01 00:00 UTC
Compare the head-to-head record, career totals, season-by-season performance, and match log for Steven Diez vs Matteo Viola.
Want to explore more matchups? Advanced rivalry search lets you browse current and historical rivalries, unbeaten records, or every matchup for a player.
| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Steven Diez | 6-4 6-4 | Matteo Viola | Match data | Jul 11, 2016 | Q2 | Hamburg Open | ATP 500 | Clay |
1 qualifying meeting shown in the table; qualifying is excluded from the H2H score. Arrows show an edition's recorded category and documented modern equivalent; unresolved editions keep their recorded category. Asterisked totals include editions mapped from documented historical predecessor categories. Mapping details.
| Player | Current | Peak | Pts | Elo | W | L | Win % | GS | 1000 including documented historical predecessor categories | Finals | 500 including documented historical predecessor categories | 250 including documented historical predecessor categories | Titles |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Steven Diez | #940 | #134 | 418 | 1,591 | 2 | 8 | 20.0% | 0 | 0 | 0 | 0 | 0 | 0 |
| Matteo Viola | #1,289 | #118 | 480 | 1,639 | 4 | 13 | 23.5% | 0 | 0 | 0 | 0 | 0 | 0 |
Seasons are aligned by the age each player spent most of that calendar year. GS and Titles are cumulative career totals through that season.
| Age | Steven Diez | Matteo Viola | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 23 | 2014 | 0–1 | 0.0% | #384 | 1,397 | 0 | 0 | — | — | — | — | — | — | — |
| 24 | — | — | — | — | — | — | — | 2012 | 0–3 | 0.0% | #135 | 1,551 | 0 | 0 |
| 25 | 2016 | 1–3 | 25.0% | #166 | 1,504 | 0 | 0 | 2013 | 4–7 | 36.4% | #160 | 1,617 | 0 | 0 |
| 26 | 2017 | 0–1 | 0.0% | #306 | 1,466 | 0 | 0 | 2014 | 0–1 | 0.0% | #190 | 1,553 | 0 | 0 |
| 28 | 2019 | 1–1 | 50.0% | #136 | 1,554 | 0 | 0 | — | — | — | — | — | — | — |
| 29 | 2020 | 0–1 | 0.0% | #179 | 1,566 | 0 | 0 | — | — | — | — | — | — | — |
| 30 | — | — | — | — | — | — | — | 2018 | 0–1 | 0.0% | #291 | 1,523 | 0 | 0 |
| 31 | 2022 | 0–1 | 0.0% | #272 | 1,484 | 0 | 0 | 2019 | 0–1 | 0.0% | #225 | 1,501 | 0 | 0 |
Seasons are aligned by the age each player spent most of that calendar year. Results cover completed main-draw matches. Bold green marks the higher win percentage when both players have at least 5 matches on that surface at the aligned age.
| Age | Steven Diez | Matteo Viola | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | Hard | Clay | Grass | Yr | Hard | Clay | Grass | |||||||||||||||||||
| W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | |||
| 23 | 2014 | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 24 | — | — | — | — | — | — | — | — | — | — | — | — | — | 2012 | 0 | 2 | 2 | 0.0% | 0 | 1 | 1 | 0.0% | — | — | — | — |
| 25 | 2016 | 1 | 1 | 2 | 50.0% | 0 | 2 | 2 | 0.0% | — | — | — | — | 2013 | 4 | 5 | 9 | 44.4% | 0 | 1 | 1 | 0.0% | 0 | 1 | 1 | 0.0% |
| 26 | 2017 | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — | 2014 | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — |
| 28 | 2019 | — | — | — | — | 1 | 1 | 2 | 50.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 29 | 2020 | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 30 | — | — | — | — | — | — | — | — | — | — | — | — | — | 2018 | — | — | — | — | — | — | — | — | 0 | 1 | 1 | 0.0% |
| 31 | 2022 | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — | 2019 | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — |
| Career | — | 1 | 2 | 3 | 33.3% | 1 | 6 | 7 | 14.3% | — | — | — | — | — | 4 | 8 | 12 | 33.3% | 0 | 3 | 3 | 0.0% | 0 | 2 | 2 | 0.0% |
Seasons are aligned by the age each player spent most of that calendar year. Sample is shown as matches with detailed serve and return statistics / total main draw matches. Bold green marks the stronger value when both stat samples contain at least 5 matches; lower is better for DFs/M.
| Age | Steven Diez | Matteo Viola | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | Sample | Aces/M | DFs/M | 1st Sv% | 1st Pts% | 2nd Pts% | BP Saved% | BP Conv% | Svc Pts% | Ret Pts% | Yr | Sample | Aces/M | DFs/M | 1st Sv% | 1st Pts% | 2nd Pts% | BP Saved% | BP Conv% | Svc Pts% | Ret Pts% | |
| 23 | 2014 | 1/1 | 1.0 | 7.0 | 48.1% | 57.7% | 32.1% | 54.5% | 0.0% | 44.4% | 29.5% | — | —/— | — | — | — | — | — | — | — | — | — |
| 24 | — | —/— | — | — | — | — | — | — | — | — | — | 2012 | 3/3 | 1.3 | 4.7 | 57.4% | 56.6% | 40.3% | 53.3% | 31.0% | 49.7% | 30.3% |
| 25 | 2016 | 4/4 | 2.8 | 3.8 | 62.1% | 62.3% | 44.9% | 47.0% | 43.3% | 55.6% | 36.7% | 2013 | 11/11 | 2.1 | 5.5 | 60.5% | 62.7% | 41.2% | 52.8% | 58.7% | 54.1% | 39.9% |
| 26 | 2017 | 1/1 | 1.0 | 4.0 | 56.7% | 58.8% | 46.2% | 50.0% | 66.7% | 53.3% | 35.2% | 2014 | 1/1 | 2.0 | 2.0 | 69.7% | 56.5% | 50.0% | 50.0% | 20.0% | 54.5% | 32.1% |
| 28 | 2019 | 2/2 | 1.5 | 1.0 | 66.7% | 62.4% | 70.6% | 67.5% | 26.7% | 65.1% | 44.1% | — | —/— | — | — | — | — | — | — | — | — | — |
| 29 | 2020 | 1/1 | 2.0 | 5.0 | 68.3% | 66.3% | 27.5% | 30.0% | 50.0% | 54.0% | 35.4% | — | —/— | — | — | — | — | — | — | — | — | — |
| 30 | — | —/— | — | — | — | — | — | — | — | — | — | 2018 | 1/1 | 0.0 | 4.0 | 64.8% | 48.6% | 26.3% | 25.0% | 16.7% | 40.7% | 36.7% |
| 31 | 2022 | 1/1 | 0.0 | 1.0 | 67.7% | 54.8% | 55.0% | 66.7% | 0.0% | 54.8% | 20.4% | 2019 | 1/1 | 0.0 | 6.0 | 64.5% | 50.0% | 27.3% | 33.3% | 33.3% | 41.9% | 35.7% |
Seasons are aligned by the age each player spent most of that calendar year. Metrics are precomputed from eligible main-draw results; point-stat values use the available detailed sample. Bold green marks the stronger value when both underlying samples are sufficient. Lower is better for Schedule because a negative value means a tougher schedule. Career Schedule is normalized per 100 matches.
| Age | Steven Diez | Matteo Viola | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | Elo | P+ | Serve+ | Return+ | PD | TPW% | Hard Elo | Clay Elo | Grass Elo | Set Win % | Set Margin | Dec. Set | Tiebreak | Pressure+ | Schedule | Yr | Elo | P+ | Serve+ | Return+ | PD | TPW% | Hard Elo | Clay Elo | Grass Elo | Set Win % | Set Margin | Dec. Set | Tiebreak | Pressure+ | Schedule | |
| 17 | 2008 | 1487 | 98.6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 19 | 2010 | 1477 | 103.1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 20 | 2011 | 1464 | 93.6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 21 | 2012 | 1450 | 95.9 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 22 | 2013 | 1423 | 90.7 | — | — | — | — | — | — | — | — | — | — | — | — | — | 2010 | 1502 | 102.7 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 23 | 2014 | 1397 | 92.2 | -3.17 | -0.46 | 0.532 | 37.8% | — | — | — | 0.0% | -4.50 | — | — | — | +0.04 | 2011 | 1445 | 96.3 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 24 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2012 | 1551 | 113.1 | -3.19 | -2.99 | 0.602 | 40.4% | — | — | — | 12.5% | -2.75 | 0–1 | — | — | -0.08 |
| 25 | 2016 | 1505 | 118.7 | -2.88 | -0.89 | 0.827 | 46.2% | — | — | — | 30.0% | -1.40 | 1–1 | 0–1 | — | +0.40 | 2013 | 1618 | 125.7 | -4.43 | +1.17 | 0.870 | 47.6% | +38 | — | — | 38.5% | -0.69 | 2–2 (50%) | 0–1 | — | +0.15 |
| 26 | 2017 | 1466 | 101.2 | -1.42 | -1.50 | 0.754 | 44.7% | — | — | — | 0.0% | -2.50 | — | — | — | -0.05 | 2014 | 1554 | 100.5 | -2.13 | -3.46 | 0.706 | 44.5% | — | — | — | 0.0% | -2.50 | — | — | — | +0.05 |
| 27 | 2018 | 1452 | 97.8 | — | — | — | — | — | — | — | — | — | — | — | — | — | 2015 | 1497 | 99.1 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 28 | 2019 | 1554 | 116.7 | -2.41 | +1.98 | 1.263 | 53.0% | — | — | — | 33.3% | -0.33 | 0–1 | 0–1 | — | -0.09 | 2016 | 1487 | 101.8 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 29 | 2020 | 1566 | 108.3 | -0.71 | -1.67 | 0.769 | 45.2% | — | — | — | 25.0% | -1.50 | — | — | — | +0.14 | 2017 | 1476 | 97.7 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 30 | 2021 | 1515 | 105.5 | — | — | — | — | — | — | — | — | — | — | — | — | — | 2018 | 1524 | 100.9 | +2.29 | -0.77 | 0.620 | 38.8% | — | — | — | 0.0% | -4.50 | — | — | — | -0.12 |
| 31 | 2022 | 1484 | 98.9 | -3.27 | -2.64 | 0.452 | 39.6% | — | — | — | 0.0% | -3.50 | — | — | — | -0.01 | 2019 | 1502 | 91.2 | -4.27 | -1.22 | 0.615 | 39.4% | — | — | — | 0.0% | -4.50 | — | — | — | +0.14 |
| 32 | 2023 | 1469 | 97.0 | — | — | — | — | — | — | — | — | — | — | — | — | — | 2020 | 1508 | 101.1 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 33 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2021 | 1503 | 106.0 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 34 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2022 | 1492 | 100.2 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 1591 | 105.2 | -2.49 | -0.59 | 0.806 | 45.8% | — | — | — | 21.7% | -1.83 | 1–2 (33%) | 0–2 | — | +4.30 | — | 1639 | 110.8 | -3.67 | -0.09 | 0.776 | 45.1% | +38 | — | — | 27.5% | -1.57 | 2–3 (40%) | 0–1 | — | +0.82 |
Each player's five most-played main-draw opponents. The current matchup is highlighted when it appears in a player's top five.
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Bernard Tomic | 1 | 1 | 2 | May 23, 2019 | H2H |
| Jordan Thompson | 0 | 1 | 1 | Apr 7, 2022 | H2H |
| Mackenzie McDonald | 0 | 1 | 1 | Sep 29, 2020 | H2H |
| Jo-Wilfried Tsonga | 0 | 1 | 1 | May 24, 2019 | H2H |
| Nicolas Almagro | 0 | 1 | 1 | Apr 26, 2017 | H2H |
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Gilles Simon | 0 | 2 | 2 | Jun 14, 2018 | H2H |
| Evgeny Donskoy | 0 | 1 | 1 | Sep 19, 2019 | H2H |
| Andrey Golubev | 0 | 1 | 1 | Apr 23, 2014 | H2H |
| David Ferrer | 0 | 1 | 1 | Sep 27, 2013 | H2H |
| Somdev Devvarman | 1 | 0 | 1 | Sep 26, 2013 | H2H |