| JJJean Claude Judlin5 matches, 2026 | 1,498.8 | | 71.46 | 2-3 | 7 Jan | Open |
| HJHelene Juez6 matches, 2026 | 1,541.7 | | 33.07 | 4-2 | 20 Sep | Open |
| PJPatrick John JugoPH3 matches, 2019 | 1,487.8 | | | | 31 Mar 2019 | Open |
| MJMuhamad Faris Bin Juhari1 matches, 2026 | 1,475.4 | | 77.82 | 0-1 | 18 Jul | Open |
| DJDaniel Attila JuhaszHU51 matches, 2025 to 2026 | 1,458.6 | -17.9 | 71.08 | 9-20 | 20 Sep | Open |
| DJDaniel Juhasz1 matches, 2026 | 1,490.1 | | 70.83 | 0-1 | 25 Jul | Open |
| MJMarika JuholaFI4 matches, 2023 | 1,486.9 | | | | 9 Sep 2023 | Open |
| SJSatu JuholaFI4 matches, 2023 | 1,536.8 | | | | 16 Apr 2023 | Open |
| LJLynda JuhrUS9 matches, 2023 to 2026 | 1,511.7 | | 50.94 | 3-4 | 5 Sep | Open |
| JJJohn JukesENG31 matches, 2018 to 2020 | 1,394.9 | | | | 26 Jan 2020 | Open |
| JJJon JukesENG54 matches, 2018 to 2020 | 1,401.8 | | | | 26 Jan 2020 | Open |
| AJAlgina JuknaiteLT2 matches, 2023 to 2024 | 1,467.3 | | | | 20 Oct 2024 | Open |
| AJAsta JuknieneLT17 matches, 2022 to 2026 | 1,469.9 | | 46.91 | 3-2 | 3 Oct | Open |
| KJKhairul Nizam Bin JulaihiMY4 matches, 2023 | 1,475.7 | | | | 2 Jul 2023 | Open |
| JJJoseph Juleff22 matches, 2026 | 1,536.2 | +80.9 | 54.53 | 10-12 | 4 Oct | Open |
| BJBirgitte Juler1 matches, 2023 | 1,492.6 | | | | 30 Apr 2023 | Open |
| JJJohn Juler1 matches, 2023 | 1,479.0 | | | | 30 Apr 2023 | Open |
| PJPatrick JulhesNL6 matches, 2026 | 1,543.9 | | 39.85 | 4-2 | 20 Sep | Open |
| RJRhys JulianENG18 matches, 2018 to 2026 | 1,542.4 | | 70.04 | 1-1 | 27 Jun | Open |
| JJJames Julie3 matches, 2026 | 1,445.7 | | 51.33 | 0-3 | 4 Jun | Open |
| LJLuciano Julie4 matches, 2026 | 1,569.3 | | 56.64 | 4-0 | 11 Jun | Open |
| MJMatteo Julien2 matches, 2026 | 1,456.8 | | 40.72 | 0-2 | 20 Sep | Open |
| CJClinton Julies31 matches, 2025 to 2026 | 1,633.8 | +0.0 | 66.61 | 12-8 | 6 Sep | Open |
| CJClinton Julius2 matches, 2026 | 1,509.6 | | 65.86 | 1-1 | 24 May | Open |
| JJJoshua JuliusNZ10 matches, 2026 | 1,492.5 | | 51.37 | 4-6 | 16 May | Open |
| SJSalah Juma4 matches, 2025 | 1,436.8 | | | | 8 Aug 2025 | Open |
| HJHu Jun7 matches, 2023 | 1,530.9 | | | | 9 Sep 2023 | Open |
| JJJiang Jun4 matches, 2023 | 1,463.2 | | | | 9 Sep 2023 | Open |
| TJTang Jun1 matches, 2005 | 1,476.8 | | | | 3 Jan 2005 | Open |
| LJLee Jun-hwan3 matches, 2023 | 1,484.6 | | | | 25 Mar 2023 | Open |
| JJJauhar Lisa Binti Junaidi1 matches, 2026 | 1,482.1 | | 44.76 | 0-1 | 18 Jul | Open |
| AJAlexander Jung8 matches, 2026 | 1,401.7 | | 40.95 | 1-7 | 19 Jul | Open |
| CJChan Il JungKR2 matches, 2019 | 1,498.0 | | | | 27 Jan 2019 | Open |
| CJChristopher JungDE4 matches, 2023 to 2026 | 1,520.0 | | 73.58 | 1-1 | 16 Aug | Open |
| DJDavid Jung7 matches, 2026 | 1,527.2 | | 59.24 | 4-3 | 19 Jul | Open |
| HJHwan Il JungKR1 matches, 2019 | 1,475.5 | | | | 27 Jan 2019 | Open |
| MJMarco JungDE16 matches, 2025 to 2026 | 1,491.8 | | 69.08 | 6-8 | 25 Jul | Open |
| SJSteve Jung6 matches, 2026 | 1,573.7 | | 71.52 | 5-1 | 20 Aug | Open |
| SJSung Hwa JungKR4 matches, 2019 to 2025 | 1,466.7 | | | | 28 Sep 2025 | Open |
| WJWan Jin JungKR2 matches, 2019 | 1,462.5 | | | | 27 Jan 2019 | Open |
| DJDavid Jungbluth2 matches, 2022 to 2025 | 1,463.4 | | | | 28 Sep 2025 | Open |
| TJThomas JunghansCH317 matches, 2016 to 2026 | 1,739.0 | +0.0 | 47.55 | 13-6 | 2 Aug | Open |
| MJMarco JungwirthAT88 matches, 2019 to 2026 | 1,384.0 | +0.0 | 72.41 | 3-6 | 16 Aug | Open |
| CJCharles Losper junior3 matches, 2026 | 1,491.1 | | 51.54 | 1-2 | 24 Apr | Open |
| NJNadirah JuniorMY2 matches, 2026 | 1,501.5 | | 40.76 | 1-1 | 18 Jul | Open |
| PJPetr Grecman junior2 matches, 2024 | 1,504.5 | | | | 27 Jan 2024 | Open |
| LJLi Junjie37 matches, 2023 to 2024 | 1,628.4 | | | | 10 Aug 2024 | Open |
| MJMarcel JunkDE20 matches, 2024 | 1,525.9 | | | | 11 Feb 2024 | Open |
| AJAlex Junker2 matches, 2025 | 1,459.7 | | | | 25 Sep 2025 | Open |
| JJJaro Junker1 matches, 2025 | 1,480.6 | | | | 16 Aug 2025 | Open |
| JJJascha JunkerCH25 matches, 2026 | 1,254.4 | -90.7 | 44.56 | 3-22 | 21 Sep | Open |
| MJMaurice JunkerDE73 matches, 2022 to 2026 | 1,436.9 | +0.0 | 72.45 | 6-7 | 29 Aug | Open |
| MJMelvin Zheng Junlong3 matches, 2026 | 1,520.4 | | 75.60 | 1-2 | 14 Sep | Open |
| YJYin Junlong20 matches, 2023 to 2024 | 1,540.5 | | | | 4 Oct 2024 | Open |
| WJWang Junyu6 matches, 2023 to 2024 | 1,495.0 | | | | 4 Oct 2024 | Open |
| RJRichard Jupp1 matches, 2026 | 1,481.7 | | 61.50 | 0-1 | 22 Aug | Open |
| DJDaniel Juras1 matches, 2026 | 1,482.9 | | 65.51 | 0-1 | 25 Jul | Open |
| PJPat JurasinUS3 matches, 2023 | 1,527.1 | | | | 16 Sep 2023 | Open |
| PJPiotr JurczykPL3 matches, 2026 | 1,523.5 | | 50.46 | 2-1 | 11 Apr | Open |
| AJAbi JurdENG24 matches, 2018 to 2023 | 1,330.7 | | | | 26 Feb 2023 | Open |
| AJArturs JurenovskisLV2 matches, 2026 | 1,502.0 | | 61.96 | 1-1 | 11 Sep | Open |
| MJMatousek Jurgen15 matches, 2026 | 1,539.9 | | 63.87 | 9-6 | 21 Aug | Open |
| FJFranc Juric23 matches, 2026 | 1,592.5 | +81.1 | 61.93 | 14-9 | 24 Sep | Open |
| JJJosip JuricHR8 matches, 2026 | 1,514.1 | | 68.64 | 4-4 | 9 Aug | Open |
| EJEleri Jurisaar2 matches, 2026 | 1,492.9 | | 57.21 | 1-1 | 11 Sep | Open |
| BJBirgit Jurjens1 matches, 2026 | 1,480.7 | | 41.77 | 0-1 | 11 Sep | Open |
| VJVilmar JuroEE3 matches, 2023 | 1,490.6 | | | | 16 Apr 2023 | Open |
| IJIvan Juros3 matches, 2026 | 1,471.9 | | 51.09 | 1-2 | 7 Aug | Open |
| FJFlorian JurratDE26 matches, 2026 | 1,422.1 | +0.0 | 61.24 | 8-18 | 20 Aug | Open |
| RJRalfs JursevskisLV2 matches, 2026 | 1,501.4 | | 60.01 | 1-1 | 11 Sep | Open |
| TJTim Juschka4 matches, 2026 | 1,457.9 | | 52.85 | 1-3 | 12 Aug | Open |
| KJKevin JussenDE73 matches, 2025 to 2026 | 1,713.3 | +0.0 | 83.53 | 37-17 | 29 Aug | Open |
| JJJason JussilaCA3 matches, 2026 | 1,490.1 | | 68.39 | 1-2 | 21 Jun | Open |
| NJNico JustDE1 matches, 2025 | 1,478.3 | | | | 16 Aug 2025 | Open |
| AJAbbey JusticeAU50 matches, 2019 to 2022 | 1,164.7 | | | | 28 May 2022 | Open |
| BJBen JusticeAU73 matches, 2021 to 2026 | 1,608.3 | +0.0 | 69.35 | 8-8 | 15 Mar | Open |
| MJMaddie Justice6 matches, 2022 | 1,377.3 | | | | 28 May 2022 | Open |
| NJNigel JusticeENG5 matches, 1996 to 2001 | 1,471.3 | | | | 3 Jan 2001 | Open |
| TJThomas JusticeAU19 matches, 2020 to 2022 | 1,546.5 | | | | 28 May 2022 | Open |
| TJTim JusticeAU7 matches, 2022 | 1,415.6 | | | | 28 May 2022 | Open |
| JJJosé JusticiaES534 matches, 2018 to 2026 | 1,619.4 | +0.0 | 83.97 | 43-51 | 5 Jun | Open |
| AJAles Justinek2 matches, 2026 | 1,466.5 | | 49.92 | 0-2 | 4 Jul | Open |
| KJKvetoslav JustychCZ1 matches, 2026 | 1,483.6 | | 59.79 | 0-1 | 30 Aug | Open |
| TJTsolmonbaatar JuulkhuuMN21 matches, 2023 to 2026 | 1,539.9 | +0.0 | 63.12 | 1-4 | 17 May | Open |
| MJMarcus JuuramEE10 matches, 2023 | 1,463.0 | | | | 21 Oct 2023 | Open |
| TJToomas Juuram4 matches, 2023 | 1,422.2 | | | | 22 Oct 2023 | Open |
| DJDonatas JuzumasLT6 matches, 2024 to 2026 | 1,445.2 | | 61.97 | 1-4 | 11 Sep | Open |
| JJJiang Yuan (Jermain) JwaySG1 matches, 2025 | 1,486.9 | | | | 5 Jul 2025 | Open |
| JJJuho JylhamaaFI33 matches, 2023 to 2026 | 1,529.2 | +0.0 | 63.97 | 2-10 | 26 Apr | Open |