![Brazilian professional football player Givanildo Vieira de Sousa, known as Hulk, of Shanghai SIPG F.C. jumps for a head ball during the group match of 20/21 AFC Champions League (ACL) against Yokohama Brazilian professional football player Givanildo Vieira de Sousa, known as Hulk, of Shanghai SIPG F.C. jumps for a head ball during the group match of 20/21 AFC Champions League (ACL) against Yokohama](https://c8.alamy.com/comp/2EM26DJ/brazilian-professional-football-player-givanildo-vieira-de-sousa-known-as-hulk-of-shanghai-sipg-fc-jumps-for-a-head-ball-during-the-group-match-of-2021-afc-champions-league-acl-against-yokohama-f-marinos-doha-city-qatar-25-november-2020-2EM26DJ.jpg)
Brazilian professional football player Givanildo Vieira de Sousa, known as Hulk, of Shanghai SIPG F.C. jumps for a head ball during the group match of 20/21 AFC Champions League (ACL) against Yokohama
![Jacob Shaffelburg of Canada's Toronto FC (24) heads the ball challenged by Rafael Baca of Mexico's Cruz Azul during a CONCACAF Champions League quarterfinal second leg soccer match at Azteca stadium in Jacob Shaffelburg of Canada's Toronto FC (24) heads the ball challenged by Rafael Baca of Mexico's Cruz Azul during a CONCACAF Champions League quarterfinal second leg soccer match at Azteca stadium in](https://c8.alamy.com/comp/2MEHKXC/jacob-shaffelburg-of-canadas-toronto-fc-24-heads-the-ball-challenged-by-rafael-baca-of-mexicos-cruz-azul-during-a-concacaf-champions-league-quarterfinal-second-leg-soccer-match-at-azteca-stadium-in-mexico-city-tuesday-may-4-2021-ap-photofernando-llano-2MEHKXC.jpg)
Jacob Shaffelburg of Canada's Toronto FC (24) heads the ball challenged by Rafael Baca of Mexico's Cruz Azul during a CONCACAF Champions League quarterfinal second leg soccer match at Azteca stadium in
![PSG's Angel Di Maria, center, heads the ball during the Champions League, round of 16, first leg soccer match between Paris Saint Germain and Real Madrid at the Parc des Princes stadium, PSG's Angel Di Maria, center, heads the ball during the Champions League, round of 16, first leg soccer match between Paris Saint Germain and Real Madrid at the Parc des Princes stadium,](https://l450v.alamy.com/450v/2mc6w93/psgs-angel-di-maria-center-heads-the-ball-during-the-champions-league-round-of-16-first-leg-soccer-match-between-paris-saint-germain-and-real-madrid-at-the-parc-des-princes-stadium-in-paris-france-tuesday-feb-15-2022-ap-photothibault-camus-2mc6w93.jpg)
PSG's Angel Di Maria, center, heads the ball during the Champions League, round of 16, first leg soccer match between Paris Saint Germain and Real Madrid at the Parc des Princes stadium,
![Soccer, health officials gather for head injury summit amid criticism from CTE researchers | AP News Soccer, health officials gather for head injury summit amid criticism from CTE researchers | AP News](https://dims.apnews.com/dims4/default/167cc4a/2147483647/strip/true/crop/3000x2000+0+0/resize/599x399!/quality/90/?url=https%3A%2F%2Fstorage.googleapis.com%2Fafs-prod%2Fmedia%2Fbd61c4ad15b64eb18ebcf11c5fdc684c%2F3000.jpeg)
Soccer, health officials gather for head injury summit amid criticism from CTE researchers | AP News
![Real Madrid's Portuguese forward Cristiano Ronaldo vies with Roma's midfielder from Belgium Radja Nainggola… | Cristiano ronaldo, Ronaldo, Santiago bernabéu stadium Real Madrid's Portuguese forward Cristiano Ronaldo vies with Roma's midfielder from Belgium Radja Nainggola… | Cristiano ronaldo, Ronaldo, Santiago bernabéu stadium](https://i.pinimg.com/736x/df/95/11/df9511fa1e40e5796668bb0cf39c8d80.jpg)
Real Madrid's Portuguese forward Cristiano Ronaldo vies with Roma's midfielder from Belgium Radja Nainggola… | Cristiano ronaldo, Ronaldo, Santiago bernabéu stadium
![Milan, Italy - 23 October, 2019: Antonio Conte, head coach of FC Internazionale, holds the ball during the UEFA Champions League football match between FC Internazionale and Borussia Dortmund. FC Internazionale won Milan, Italy - 23 October, 2019: Antonio Conte, head coach of FC Internazionale, holds the ball during the UEFA Champions League football match between FC Internazionale and Borussia Dortmund. FC Internazionale won](https://c8.alamy.com/comp/2AJB5JB/milan-italy-23-october-2019-antonio-conte-head-coach-of-fc-internazionale-holds-the-ball-during-the-uefa-champions-league-football-match-between-fc-internazionale-and-borussia-dortmund-fc-internazionale-won-2-0-over-borussia-dortmund-credit-nicol-campoalamy-live-news-2AJB5JB.jpg)