Daniel Altmaier is about to kick off his campaign in the draw in Stuttgart.

Draw prediction with head to head records

This is Daniel Altmaier’s projected draw andhisprojected opponents in Boss Open. Altmaier has a negative record (0-3) against the projected opponents.

R1 – Christopher O Connell (74) – H2H 0-0
R2 – Lorenzo Sonego (41) – H2H 0-2
1/4 – Hubert Hurkacz (14) – H2H 0-1
or Yosuke Watanuki (121) – H2H 0-1
1/2 – Stefanos Tsitsipas (5) – H2H 0-0
or Tommy Paul (16) – H2H 0-0
Fin – Taylor Fritz (8) – H2H 0-0
or Frances Tiafoe (12) – H2H 0-2
Latest Updated
Draw

R1 – Christopher O Connell’s rankings and performance.

Head to head record 0-0

38 - 34win/loss in 2025

Rank
68
High
53
Year Total Hard Clay I.hard Grass Carpet
2023 38-34 19-18 11-9 4-3 4-4 0-0
2022 50-25 30-16 12-5 3-1 5-3 0-0
2021 22-16 14-9 3-3 1-1 4-3 0-0
2020 12-12 4-5 4-3 4-4 0-0 0-0
2019 82-26 12-6 60-16 5-2 5-2 0-0
2018 11-12 2-2 9-10 0-0 0-0 0-0
2017 20-26 17-16 3-10 0-0 0-0 0-0
2016 63-19 15-2 45-15 2-1 1-1 0-0

Christopher O Connell has a 19-19 record in 2023, 0-1 on grass. Talking about the previous 3 years, the Australian has a 9-7 record on grass. O Connell won 4 of his last 10 matches.

Christopher’s most significant result of this current year was getting to the semifinal the Split Challenger and Munich.

Last year in Boss Open the Australian surrendered to Andy Murray in the 1st round 6-4 6-3.

H2H Daniel Altmaier vs. Christopher O Connell

There is no head to head record between Daniel Altmaier and Christopher O Connell since this would be the first time that they will face off in the main tour.

R2 – Lorenzo Sonego’s rankings and performance.

Head to head 2-0 for Lorenzo Sonego

30 - 31win/loss in 2025

Rank
46
High
21
Year Total Hard Clay I.hard Grass Carpet
2023 30-31 10-12 9-7 9-8 2-4 0-0
2022 30-29 7-9 8-11 10-5 5-4 0-0
2021 30-24 9-11 9-4 6-6 6-3 0-0
2020 13-15 0-5 7-7 6-3 0-0 0-0
2019 44-29 12-9 26-13 1-4 5-3 0-0
2018 35-30 9-7 16-11 7-7 2-3 1-2
2017 45-20 7-3 27-13 6-1 0-0 5-3
2016 34-31 9-6 21-20 4-3 0-0 0-2

Lorenzo Sonego has a 16-14 record in 2023, 1-0 on grass. Talking about the last 3 years, Sonego has a 12-7 record on grass. Lorenzo won 6 of his last 10 matches.

Last year in Boss Open Lorenzo capitulated to Matteo Berrettini in the quarter 3-6 6-3 6-4.

H2H Daniel Altmaier vs. Lorenzo Sonego

This would be the 3rd time that Daniel Altmaier and Lorenzo Sonego clash against each other. The head to head is 2-0 for Sonego (see full H2H stats), but they have never competed against each other on grass in major tournaments.

1/4 – Hubert Hurkacz’s rankings and performance.

Head to head 1-0 for Hubert Hurkacz

47 - 24win/loss in 2025

Rank
9
High
6
Year Total Hard Clay I.hard Grass Carpet
2023 47-24 23-11 5-5 13-5 6-3 0-0
2022 41-21 18-9 9-4 9-6 5-2 0-0
2021 36-23 22-9 1-4 8-7 5-3 0-0
2020 15-13 8-5 3-3 4-5 0-0 0-0
2019 36-27 23-11 7-7 2-6 4-3 0-0
2018 52-30 22-15 16-4 9-6 2-3 3-2
2017 56-32 33-13 12-12 3-5 0-0 8-2
2016 47-28 8-5 29-14 10-7 0-0 0-2

Hubert Hurkacz has a 19-12 record in 2023, but he has not competed so far on grass. Hurkacz won 5 of his last 10 matches.

His best achievement of the current year was winning the competition in Marseille where he overcame Benjamin Bonzi in the final 6-3 7-6(4).

Last year in Boss Open the Pole lost to Marton Fucsovics in the 2nd round 7-5 6-7(7) 6-3.

H2H Daniel Altmaier vs. Hubert Hurkacz

This match would represent the 2nd time that Daniel Altmaier and Hubert Hurkacz clash against each other. The head to head is 1-0 for Hurkacz (see full H2H stats), but they have never competed against each other on grass in major tournaments.

Nevertheless, Daniel Altmaier could come up against Yosuke Watanuki. Their H2H record is 1-0 for Yosuke Watanuki.

1/2 – Stefanos Tsitsipas’s rankings and performance.

Head to head record 0-0

51 - 24win/loss in 2025

Rank
6
High
3
Year Total Hard Clay I.hard Grass Carpet
2023 51-24 19-9 17-5 11-6 4-4 0-0
2022 61-24 18-8 17-4 18-9 8-3 0-0
2021 55-19 26-8 23-5 6-5 0-1 0-0
2020 29-14 11-6 11-3 7-5 0-0 0-0
2019 54-25 22-12 15-5 15-5 2-3 0-0
2018 56-30 19-13 15-6 16-8 6-3 0-0
2017 57-31 14-8 25-12 14-8 4-3 0-0
2016 49-18 16-7 30-6 1-3 0-0 2-2

Stefanos Tsitsipas has a 31-9 win-loss record in 2023, but he has not competed yet on grass. The Greek won 8 of his last 10 matches.

The Greek’s most significant result of this year was reaching the final at the Australian Open and Barcelona.

Last year in Boss Open Stefanos lost to Andy Murray in the quarter 7-6(4) 6-3.

H2H Daniel Altmaier vs. Stefanos Tsitsipas

There is no head to head record between Daniel Altmaier and Stefanos Tsitsipas since this would be the first time that they will fight against each other in the main tour.

Nonetheless, Daniel Altmaier may play Tommy Paul. Their head to head record is 0-0.

Final – Taylor Fritz’s rankings and performance.

Head to head record 0-0

54 - 24win/loss in 2025

Rank
10
High
4
Year Total Hard Clay I.hard Grass Carpet
2023 54-24 35-11 11-6 5-3 3-4 0-0
2022 46-21 24-8 5-3 9-7 8-3 0-0
2021 34-22 20-13 4-5 8-3 2-1 0-0
2020 15-16 11-9 2-3 2-4 0-0 0-0
2019 40-30 17-14 12-8 4-5 7-3 0-0
2018 45-28 29-12 6-5 5-6 5-5 0-0
2017 39-26 24-16 0-0 10-5 5-5 0-0
2016 35-29 26-16 1-4 7-5 1-4 0-0

Taylor Fritz has a 31-12 win-loss record in 2023, but he has not competed as yet on grass. Fritz won 6 of his last 10 matches.

His most significant result of this current season was winning the tournament in Australia where he overcame Matteo Berrettini in the final 7-6(4) 7-6(6), and in Delray Beach where he defeated Miomir Kecmanovic in the final 6-0 5-7 6-2.

Last year in Boss Open Fritz didn’t compete in this tournament.

H2H Daniel Altmaier vs. Taylor Fritz

There is no head to head record between Daniel Altmaier and Taylor Fritz since this would be the first time that they will face off in the main tour.

Nonetheless, Daniel Altmaier may fight against Frances Tiafoe. Their H2H record is 2-0 for Frances Tiafoe.