Country
Birthdate
Height
Weight
Profi since
Play
Ranking's position
Points
Prize money
Birthdate
Height
Weight
Profi since
Play
Ranking's position
Points
Prize money
Sweden
07.11.92, 32 years
07.11.92, 32 years
Fred Simonsson vs. William Kallberg - head to head matches
| 29.07.13 | qual. | Fred Simonsson | William Kallberg | 7-63, 6-1 | match details |  Denmark F3 | Clay |
Fred Simonsson form & William Kallberg form
Fred Simonsson - last matches
 M15 Tallahassee - I. hard | ||||
| 20.11.24 1st round | vs. Ricardo Rodriguez-Pace | 6-3, 4-6, 2-6 |  | match details |
 M15 Guatemala - Hard | ||||
| 12.11.24 1st round | vs. Ondrej Horak | 4-6, 5-7 | | match details |
| M15 Guatemala - Hard | ||||
| 07.11.24 2nd round | vs. Leo Raquin | 4-6, 3-6 | | match details |
| 05.11.24 1st round | vs. Alexander Stater | 6-2, 6-4 |  | match details |
 M25 Glasgow - I. hard | ||||
| 23.10.24 1st round | vs. Daniel Masur | 6-3, 1-6, 2-6 | | match details |
| 21.10.24 qual. | vs. Luke Hooper | 6-2, 6-3 | | match details |
| 20.10.24 q 1 | vs. Daniel Bird | 6-3, 6-2 | | match details |
 M25 Falun - I. hard | ||||
| 25.09.24 2nd round | vs. Marvin Moeller | 4-6, 6-73 | | match details |
| 24.09.24 1st round | vs. Jack Karlsson Wistrand | 6-2, 6-1 | | match details |
| M15 Vaxjo - I. hard | ||||
| 18.09.24 1st round | vs. Mikail Alimli | 2-6, 1-6 | | match details |
 M15 Buzau - Clay | ||||
| 10.09.24 1st round | vs. Mihai Razvan Marinescu | 5-7, 2-6 | | match details |
 M15 Haren - Clay | ||||
| 03.09.24 qual. | vs. Noah Thurner | 6-2, 2-6, 7-10 | | match details |
| 02.09.24 q 2 | vs. Rob Van Den Berg | 7-5, 6-3 | | match details |
| M15 Ystad - Clay | ||||
| 15.08.24 2nd round | vs. John Sperle | 1-6, 4-6 | | match details |
| 14.08.24 1st round | vs. John Hallquist Lithen | 5-7, 7-63, 6-1 | | match details |
| 13.08.24 qual. | vs. Markus Bolin | 7-66, 6-3 | | match details |
| 12.08.24 q 1 | vs. Henrik Bladelius | 7-5, 7-65 | | match details |
 M15 Vaasa - Hard | ||||
| 07.08.24 1st round | vs. Iiro Vasa | 7-67, 3-6, 4-6 | | match details |
 M25 Kramsach - Clay | ||||
| 25.07.24 2nd round | vs. Toby Alex Kodat | 3-6, 0-6 | | match details |
| 24.07.24 1st round | vs. Nikita Mashtakov | 7-68, 3-6, 6-4 | | match details |
| 23.07.24 qual. | vs. Igor Dudun | 6-3, 6-3 | | match details |
| 22.07.24 q 2 | vs. Julian Peter | 6-4, 6-1 | | match details |
| 22.07.24 q 1 | vs. Matthias Uwe Kask | 6-73, 6-1, 10-8 | | match details |
 M15 Litija - Clay | ||||
| 09.07.24 qual. | vs. Filip Jeff Planinsek | 1-6, 4-6 | | match details |
| 08.07.24 q 1 | vs. Dean Thurner | 4-6, 6-2, 10-3 | | match details |
| M15 Store - Clay | ||||
| 01.07.24 q 1 | vs. Jacopo Bilardo | 0-6, 1-6 | | match details |
 M15 Kursumlijska - Clay | ||||
| 18.06.24 qual. | vs. Simeon Stankovic | 7-5, 5-7, 5-10 | | match details |
| 17.06.24 q 2 | vs. Uros Zivkovic | 6-0, 6-2 | | match details |
| 16.06.24 q 1 | vs. Petyr Kardzhiev | 6-0, 6-0 | | match details |
| M15 Kursumlijska - Clay | ||||
| 13.06.24 2nd round | vs. Marat Sharipov | 0-6, 3-6 | | match details |
William Kallberg - last matches
| USA F30 - Clay | ||||
| 03.11.14 | vs. Julian Zlobinsky | 4-6, 6-1, 6-4 | | match details |
| 03.11.14 qual. | vs. Stefan Lindmark | 1-6, 3-6 | | match details |
| 03.11.14 q 1 | vs. Sam D. Bloom | 6-4, 6-1 | | match details |
| 03.11.14 q 2 | vs. Sahr Timothy Kpulun | 6-1, 7-5 | | match details |
| Austria F2 - Clay | ||||
| 30.06.14 q 1 | vs. Daniel Baumann | 7-66, 5-7, 1-6 | | match details |
| Austria F1 - Clay | ||||
| 23.06.14 q 1 | vs. Jacob Nicolussi | 6-1, 7-64 | | match details |
| 23.06.14 qual. | vs. Ladislav Zeleny | 3-6, 6-74 | | match details |
| 23.06.14 q 2 | vs. Vadym Ursu | 6-1, 3-6, 6-2 | | match details |
 Hungary F3 - Clay | ||||
| 16.06.14 qual. | vs. Agustin Reyes Middleton | 6-2, 6-4 | | match details |
| 16.06.14 1st round | vs. Cristobal Saavedra-Corvalan | 2-6, 1-6 | | match details |
| 16.06.14 q 1 | vs. Jakub Oravec | 6-3, 4-6, 6-4 | | match details |
| USA F28 - Clay | ||||
| 21.10.13 q 2 | vs. Walker Duncan | 6-4, 6-4 | | match details |
| 21.10.13 qual. | vs. Ilya Polonskiy | 6-4, 6-0 | | match details |
| 21.10.13 1st round | vs. Sekou Bangoura | 3-6, 1-6 | | match details |
| 21.10.13 | vs. Vinod Gowda | 6-1, 2-6, 6-2 | | match details |
| 21.10.13 q 1 | vs. Edgar Rodriguez | 6-2, 6-4 | | match details |
| Denmark F3 - Clay | ||||
| 29.07.13 q 1 | vs. Philip Orno | 7-61, 3-6, 7-5 | | match details |
| 29.07.13 qual. | vs. Fred Simonsson | 6-73, 1-6 | | match details |
| Austria F5 - Clay | ||||
| 22.07.13 1st round | vs. Andrew Harris | 4-6, 6-73 | | match details |
| 22.07.13 q 1 | vs. Joseph Huber | 6-2, 6-0 | | match details |
| 22.07.13 q 2 | vs. Aljaz Radinski | 6-1, 6-1 | | match details |
| 22.07.13 qual. | vs. Jan Simon | 6-1, 6-4 | | match details |
 Egypt F13 - Clay | ||||
| 24.06.13 qual. | vs. David De Leon Elias | 6-0, 6-2 | | match details |
| 24.06.13 q 1 | vs. Brunno Barbosa | 6-0, 6-2 | | match details |
| 24.06.13 q 2 | vs. Anru Fourie | Anru Fourie - walk over | | match details |
| 24.06.13 1st round | vs. Andre Miele | 3-6, 6-72 | | match details |
| Egypt F12 - Clay | ||||
| 17.06.13 qual. | vs. Tarun Nath Surath | 6-3, 6-2 | | match details |
| 17.06.13 1st round | vs. Aslan Karatsev | 4-6, 7-610, 3-6 | | match details |
| 17.06.13 q 2 | vs. Ilia Chkonia | 6-1, 6-1 | | match details |
 Panama City - Clay | ||||
| 03.07.12 1st round | vs. Kevin Kim | 4-6, 1-6 | | match details |