| Full name: | Frederick Jack Klaassen |
| Born: | 13th November 1992, Haywards Heath, Sussex, England |
| Batting: | Right-hand batter |
| Bowling: | Left-arm medium-fast |
| Teams: | Netherlands (International Twenty20: 2018-2025/26); Netherlands (ODI: 2018-2026/27); Kent (Main FC: 2019-2021); Kent (Main ListA: 2019-2025); Kent (Main Twenty20: 2019-2026); Manchester Originals Men (Main Twenty20: 2021-2022); Gulf Giants (Main Twenty20: 2025/26); Belfast Wolves (Main Twenty20: 2026); All teams |
| Lists of matches and more detailed statistics | |
| ODI Career Batting and Fielding (2018-2026/27) | |||||||||||
| M | I | NO | Runs | HS | Ave | 100 | 50 | SRate | Ct | ||
| Netherlands | 22 | 16 | 8 | 79 | 13 | 9.87 | 0 | 0 | 61.71 | 6 | |
| ODI Career Bowling (2018-2026/27) | ||||||||||
| Balls | Mdns | Runs | Wkts | BB | Ave | 4wI | 5wI | SRate | Econ | |
| Netherlands | 1227 | 13 | 908 | 33 | 3-23 | 27.51 | 0 | 0 | 37.18 | 4.44 |
| International Twenty20 Career Batting and Fielding (2018-2025/26) | |||||||||||
| M | I | NO | Runs | HS | Ave | 100 | 50 | SRate | Ct | ||
| Netherlands | 41 | 16 | 5 | 48 | 13 | 4.36 | 0 | 0 | 81.35 | 17 | |
| International Twenty20 Career Bowling (2018-2025/26) | ||||||||||
| Balls | Mdns | Runs | Wkts | BB | Ave | 4wI | 5wI | SRate | Econ | |
| Netherlands | 840 | 0 | 1065 | 45 | 5-19 | 23.66 | 0 | 1 | 18.66 | 7.60 |
| First-Class Career Batting and Fielding (2019-2021) | |||||||||||
| M | I | NO | Runs | HS | Ave | 100 | 50 | SRate | Ct | ||
| Kent | 5 | 8 | 3 | 45 | 14* | 9.00 | 0 | 0 | 17.44 | 3 | |
| First-Class Career Bowling (2019-2021) | ||||||||||
| Balls | Mdns | Runs | Wkts | BB | Ave | 5wI | 10wM | SRate | Econ | |
| Kent | 689 | 11 | 422 | 9 | 4-44 | 46.88 | 0 | 0 | 76.55 | 3.67 |
| List A Career Batting and Fielding (2017-2026/27) | |||||||||||
| M | I | NO | Runs | HS | Ave | 100 | 50 | SRate | Ct | ||
| Overall | 44 | 31 | 16 | 142 | 17* | 9.46 | 0 | 0 | 61.73 | 14 | |
| List A Career Bowling (2017-2026/27) | ||||||||||
| Balls | Mdns | Runs | Wkts | BB | Ave | 4wI | 5wI | SRate | Econ | |
| Overall | 2207 | 21 | 1850 | 62 | 3-23 | 29.83 | 0 | 0 | 35.59 | 5.02 |
| Twenty20 Career Batting and Fielding (2018-2026) | |||||||||||
| M | I | NO | Runs | HS | Ave | 100 | 50 | SRate | Ct | ||
| Overall | 145 | 46 | 23 | 208 | 21* | 9.04 | 0 | 0 | 102.97 | 52 | |
| Twenty20 Career Bowling (2018-2026) | ||||||||||
| Balls | Mdns | Runs | Wkts | BB | Ave | 4wI | 5wI | SRate | Econ | |
| Overall | 2888 | 3 | 4014 | 151 | 5-19 | 26.58 | 2 | 1 | 19.12 | 8.33 |
| Twenty20 Blast Career Batting and Fielding (2019-2026) | |||||||||||
| M | I | NO | Runs | HS | Ave | 100 | 50 | SRate | Ct | ||
| Kent | 77 | 20 | 12 | 130 | 21* | 16.25 | 0 | 0 | 125.00 | 27 | |
| Twenty20 Blast Career Bowling (2019-2026) | ||||||||||
| Balls | Mdns | Runs | Wkts | BB | Ave | 4wI | 5wI | SRate | Econ | |
| Kent | 1595 | 3 | 2334 | 81 | 4-17 | 28.81 | 2 | 0 | 19.69 | 8.77 |
| The Hundred Career Batting and Fielding (2021-2022) | |||||||||||
| M | I | NO | Runs | HS | Ave | 100 | 50 | SRate | Ct | ||
| Manchester Originals Men | 8 | 4 | 2 | 11 | 6* | 5.50 | 0 | 0 | 84.61 | 3 | |
| The Hundred Career Bowling (2021-2022) | ||||||||||
| Balls | Dots | Runs | Wkts | BB | Ave | 4wI | 5wI | SRate | Econ | |
| Manchester Originals Men | 114 | 45 | 188 | 7 | 3-23 | 26.85 | 0 | 0 | 16.28 | 164.91 |
| International League Twenty20 Career Batting and Fielding (2025/26) | |||||||||||
| M | I | NO | Runs | HS | Ave | 100 | 50 | SRate | Ct | ||
| Gulf Giants | 4 | 2 | 2 | 5 | 5* | 0 | 0 | 166.66 | 1 | ||
| International League Twenty20 Career Bowling (2025/26) | ||||||||||
| Balls | Mdns | Runs | Wkts | BB | Ave | 4wI | 5wI | SRate | Econ | |
| Gulf Giants | 84 | 0 | 129 | 4 | 2-37 | 32.25 | 0 | 0 | 21.00 | 9.21 |