Violence in sports

New York Yankees' Tyler Austin, center, rushes Boston Red Sox relief pitcher Joe Kelly, right, after being hit by a pitch during the seventh inning of a baseball game at Fenway Park in Boston, Wednesday, April 11, 2018. At left holding back Austin is Red Sox catcher Christian Vazquez. (AP Photo/Charles Krupa)

San Diego Padres bench coach Mark McGwire, left, restrains Colorado Rockies' Nolan Arenado after he charged the mound following getting hit by a pitch from Padres starting pitcher Luis Perdomo in the third inning of a baseball game Wednesday, April 11, 2018, in Denver. (AP Photo/David Zalubowski)

Colorado Rockies' Nolan Arenado, front right, is restrained by Carlos Gonzalez, center, as Gerrardo Parra, left, keeps an eye on the San Diego Padres dugout after Arenado rushed the mound following getting hit by a pitch from Padres starting pitcher Luis Perdomo in the third inning of a baseball game Wednesday, April 11, 2018, in Denver. (AP Photo/David Zalubowski)

A flare burns as fans try to see the Manchester City team bus as it arrives ahead of the Champions League quarter final first leg soccer match between Liverpool and Manchester City at Anfield stadium in Liverpool, England, Wednesday, April 4, 2018. (AP Photo/Dave Thompson)

Austrian Herbert Huebel, center, chairman of the FIFA monitoring committee for the Hellenic Football Federation arrives for a press conference in Athens, Wednesday, March 14, 2018. FIFA has sent a delegation to Greece to discuss the country's soccer crisis, after the government indefinitely suspended top league matches. The suspension followed a pitch invasion by the gun-toting owner of PAOK Thessaloniki Sunday after a late goal for his team was disallowed by the referee. (AP Photo/Petros Giannakouris)

PAOK owner, businessman Ivan Savvidis, second from left, approaches AEK Athens' Manager Operation Department Vassilis Dimitriadis, center, as his bodyguard and PAOK's players Fernando Varela, second from right, and Djalma Campos, right, try to stop him during a Greek League soccer match between PAOK and AEK Athens in the northern Greek city of Thessaloniki, Sunday, March 11, 2018. A disputed goal at the end of the Greek league match led to a pitch invasion by Savvidis, who appeared to be carrying a gun. Savvidis came on the field twice. It's unclear this photos shows his first time or second. (InTime Sports via AP)

PAOK owner, businessman Ivan Savvidis, second from left, approaches AEK Athens' Manager Operation Department Vassilis Dimitriadis, center, as his bodyguard and PAOK's players Fernando Varela, second from right, and Djalma Campos, right, try to stop him during a Greek League soccer match between PAOK and AEK Athens in the northern Greek city of Thessaloniki, Sunday, March 11, 2018. A disputed goal at the end of the Greek league match led to a pitch invasion by Savvidis, who appeared to be carrying a gun. Savvidis came on the field twice. It's unclear this photos shows his first time or second. (InTime Sports via AP)

PAOK owner, businessman Ivan Savvidis, second from left, approaches AEK Athens' Manager Operation Department Vassilis Dimitriadis, center, as his bodyguard and PAOK's players Fernando Varela, second from right, and Djalma Campos, right, try to stop him during a Greek League soccer match between PAOK and AEK Athens in the northern Greek city of Thessaloniki, Sunday, March 11, 2018. A disputed goal at the end of the Greek league match led to a pitch invasion by Savvidis, who appeared to be carrying a gun. Savvidis came on the field twice. It's unclear this photos shows his first time or second. (InTime Sports via AP)