ParaguayAlonso has won several domestic titles, including the Paraguayan Primera División with Cerro Porteño and the Campeonato Brasileiro Série A with Atlético Mineiro. He also helped Lille win the Ligue 1 title in the 2020-21 season.
Junior Alonso is a Paraguayan professional footballer who primarily plays as a centre-back. He has spent the majority of his career in South America, notably with Cerro Porteño and Atlético Mineiro, and has also had a stint in Europe with Lille OSC. Alonso is known for his defensive solidity and has been a regular for the Paraguay national team.
Alonso is a strong and physical centre-back who excels in aerial duels and one-on-one defending. He is comfortable playing out from the back and possesses good positional awareness, though his pace can be a vulnerability against quicker attackers. His leadership and composure make him a reliable presence in the defensive line.
| Season | Comp | Apps | G | A | YC | RC | Min |
|---|---|---|---|---|---|---|---|
| 25/26 | International Friendlies | 7 | 0 | 0 | 1 | 0 | 491 |
| 23/24 | World Cup qualification South America | 12 | 1 | 1 | 4 | 0 | 1062 |
| 23/24 | Russian Cup | 6 | 0 | 0 | 0 | 0 | 356 |
| 23/24 | Premier Liga | 29 | 0 | 3 | 4 | 0 | 2610 |
| 23/24 | International Friendlies | 2 | 0 | 0 | 1 | 0 | 180 |
| 22/23 | Russian Cup | 7 | 0 | 0 | 3 | 0 | 630 |
| 22/23 | Premier Liga | 12 | 1 | 0 | 0 | 0 | 1080 |
| 22/23 | International Friendlies | 3 | 0 | 0 | 0 | 0 | 258 |
| 21/22 | Premier Liga | 0 | 0 | 0 | 0 | 0 | 0 |
| 21/22 | International Friendlies | 0 | 0 | 0 | 0 | 0 | 0 |
| 2026 | Copa Sudamericana | 4 | 0 | 0 | 1 | 0 | 335 |
| 2026 | Campeonato Mineiro | 5 | 0 | 0 | 0 | 1 | 450 |
| 2026 | Copa do Brasil | 0 | 0 | 0 | 0 | 0 | 0 |
| 2026 | Campeonato Brasileiro Série A | 10 | 0 | 0 | 2 | 0 | 900 |
| 2025 | Copa Sudamericana | 13 | 0 | 0 | 3 | 0 | 1148 |
| 2025 | Campeonato Mineiro | 9 | 0 | 0 | 2 | 0 | 765 |
| 2025 | Copa do Brasil | 8 | 0 | 0 | 2 | 0 | 720 |
| 2025 | Campeonato Brasileiro Série A | 31 | 1 | 1 | 5 | 2 | 2619 |
| 2024 | Copa América | 0 | 0 | 0 | 0 | 0 | 0 |
| 2024 | Copa Libertadores | 7 | 0 | 0 | 0 | 0 | 630 |
| 2024 | Copa do Brasil | 8 | 0 | 0 | 2 | 0 | 715 |
| 2024 | Campeonato Brasileiro Série A | 12 | 1 | 0 | 2 | 0 | 1048 |
| 2022 | Copa Libertadores | 10 | 0 | 1 | 0 | 0 | 840 |
| 2022 | Campeonato Mineiro | 1 | 0 | 0 | 0 | 0 | 6 |
| 2022 | Copa do Brasil | 2 | 0 | 0 | 0 | 0 | 168 |
| 2022 | Campeonato Brasileiro Série A | 31 | 0 | 2 | 4 | 0 | 2599 |
| 2021 | Copa América | 5 | 1 | 0 | 1 | 0 | 450 |
| 2021 | Copa Libertadores | 12 | 0 | 0 | 0 | 0 | 1080 |
| 2021 | Campeonato Mineiro | 9 | 0 | 1 | 2 | 0 | 765 |
| 2021 | Copa do Brasil | 8 | 0 | 0 | 1 | 0 | 720 |
| 2021 | Campeonato Brasileiro Série A | 22 | 1 | 0 | 5 | 0 | 1980 |
| 2020 | Copa Libertadores | 2 | 0 | 0 | 0 | 0 | 114 |
| 2020 | Campeonato Mineiro | 6 | 0 | 0 | 2 | 0 | 540 |
| 2020 | Campeonato Brasileiro Série A | 32 | 1 | 2 | 8 | 0 | 2878 |
| 2020 | Copa Superliga (-19/20) | 1 | 0 | 1 | 0 | 0 | 90 |
| 2019 | Supercopa Argentina | 0 | 0 | 0 | 0 | 0 | 0 |
| 2019 | Copa América | 4 | 0 | 0 | 1 | 0 | 360 |
| 2019 | Copa Libertadores | 2 | 0 | 0 | 0 | 0 | 180 |
| 2019 | Copa Superliga (-19/20) | 5 | 0 | 0 | 2 | 0 | 357 |
| 2019 | Copa Argentina | 2 | 0 | 0 | 2 | 0 | 180 |
| 2016 | Primera División Clausura | 0 | 0 | 0 | 0 | 0 | 0 |
| 2016 | Primera División Apertura | 0 | 0 | 0 | 0 | 0 | 0 |
| 2016 | Copa Sudamericana | 10 | 0 | 1 | 2 | 0 | 900 |
| 2016 | Copa Libertadores | 8 | 1 | 1 | 3 | 0 | 699 |
| 2016 | Copa América Centenario 2016 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2015 | Primera División Paraguay Playoffs | 0 | 0 | 0 | 0 | 0 | 0 |
| 2015 | Primera División Clausura | 0 | 0 | 0 | 0 | 0 | 0 |
| 2015 | Primera División Apertura | 0 | 0 | 0 | 0 | 0 | 0 |
| 2015 | Copa América | 0 | 0 | 0 | 0 | 0 | 0 |
| 2015 | Copa Libertadores | 0 | 0 | 0 | 0 | 0 | 0 |
| 2014 | Copa Sudamericana | 4 | 0 | 0 | 1 | 0 | 298 |
| 2014 | Copa Libertadores | 8 | 0 | 0 | 2 | 0 | 712 |
| 2013 | Copa Sudamericana | 2 | 0 | 0 | 0 | 0 | 180 |
| 2013 | Copa Libertadores | 0 | 0 | 0 | 0 | 0 | 0 |
| 2013 | U-20 South American Championship | 2 | 1 | 0 | 0 | 0 | 119 |
| 2013 | U20 World Cup | 4 | 0 | 0 | 1 | 0 | 390 |
| 20/21 | World Cup qualification South America | 14 | 0 | 0 | 6 | 0 | 1166 |
| 19/20 | International Friendlies | 3 | 0 | 0 | 2 | 0 | 270 |
| 19/20 | Professional Football League (- 23/24) | 14 | 0 | 1 | 2 | 0 | 1149 |
| 18/19 | International Friendlies | 3 | 0 | 0 | 1 | 0 | 270 |
| 18/19 | Ligue 1 | 0 | 0 | 0 | 0 | 0 | 0 |
| 18/19 | LaLiga | 9 | 0 | 0 | 2 | 0 | 534 |
| 18/19 | Copa del Rey | 2 | 0 | 0 | 0 | 0 | 180 |
| 18/19 | Professional Football League (- 23/24) | 7 | 0 | 0 | 1 | 0 | 630 |
| 17/18 | International Friendlies | 2 | 0 | 0 | 1 | 0 | 180 |
| 17/18 | Coupe de la Ligue | 2 | 1 | 0 | 1 | 0 | 180 |
| 17/18 | Coupe de France | 2 | 0 | 0 | 0 | 0 | 180 |
| 17/18 | Ligue 1 | 34 | 2 | 0 | 3 | 0 | 2779 |
| 16/17 | International Friendlies | 2 | 0 | 0 | 0 | 0 | 180 |
| 16/17 | Coupe de France | 2 | 0 | 0 | 0 | 0 | 180 |
| 16/17 | Ligue 1 | 12 | 0 | 1 | 1 | 0 | 956 |
| 15/16 | World Cup qualification South America | 8 | 1 | 1 | 3 | 0 | 705 |
| 15/16 | International Friendlies | 0 | 0 | 0 | 0 | 0 | 0 |
| 14/15 | International Friendlies | 2 | 0 | 0 | 0 | 0 | 180 |
| 13/14 | International Friendlies | 3 | 0 | 1 | 0 | 0 | 250 |
| 12/13 | International Friendlies | 2 | 0 | 0 | 1 | 0 | 180 |
| 11/12 | World Cup qualification South America | 1 | 0 | 0 | 0 | 0 | 90 |