Sadly, it's not uncommon for professional athletes to be charged with domestic violence. Several famous NFL players, NBA stars, and boxers have been charged with domestic violence. Some of these athletes later had the charges dropped, while others were convicted on multiple counts of assault.
Who is the most famous athlete who was charged with domestic violence? Floyd Mayweather Jr. tops the list. The boxing champion pleaded guilty to a domestic violence charge in 2010. José Canseco pleaded guilty to domestic violence charges in 1988 and again in 1997.
Perhaps the most notorious case of domestic violence is that of Ray Rice. Ray Rice was charged with assault after he knocked out his fiancée, Janay Palmer, in 2014. The entire incident was caught on video. Jovan Belcher was previously charged with domestic violence before killing his girlfriend Kasandra Perkins, and then himself, in 2012.
Who knows what leads any of these baseball or basketball or football players to beat up their girlfriends or wives? It is an unfortunate part of the sports world that has been ubiquitous in recent years.