A fan of the New York Mets is reportedly in critical condition after a brawl with an alleged mother-and-son tandem, believed to be Los Angeles Dodgers fans outside the Dodger Stadium on Friday night.

According to ABC7, the still unidentified Mets fan got punched then fell to the ground, hitting his head after a fight which happened at the parking lot of the stadium after the National League Division Series opener between the Mets and Dodgers where the Mets claimed a 3-1 win.

"I walked closer and there was a gentleman on the floor and was bleeding profusely from the head. We got free rally towels that night, so they were holding the rally towels to his head," witness Maria Cerecer told ABC7.

In a similar report, the New York Post said the mother-son duo gave the victim a harsh beating causing him to lose part of his skull.

It added that the incident happened around 10:30 pm with the Mets fan immediately taken to the Los Angeles County + USC Medical Center.

"We believe that it is a son and a mother who are responsible for this assault. We believe that the weapon used were hands and feet," LAPD chief Charlie Beck mentioned in the New York Post report.

The authorities, however, noted that it is still not clear if the rivals were indeed fans from the opposing teams.

In addition, Daily Mail noted that the fight between the fans of the two teams quickly escalated into a violent attack. Investigators are reportedly still gathering more evidence like closed circuit television (CCTV) footages near the crime scene to determine the identity of the suspects.

Though in a critical condition, the victim is now reportedly in a stable condition as per Yahoo Sports.

Meanwhile, this type of violence is not anymore new at the Dodger Stadium as the Los Angeles Times noted that security at the area was questioned after San Francisco Giants fan Bryan Stow was also beaten badly by two men in 2011.

Stow suffered serious brain damage and got severely impaired after the attack with Marvin Norwood and Louie Sanchez pleading guilty to hitting and causing great damage on Stow.

The Los Angeles Times added that Stow also sued the Dodgers because they had insufficient security and lighting at the parking lot of the stadium.

"A jury faulted the team, along with Sanchez and Norwood, and awarded Stow nearly $18 million after a six-week trial in 2014," added the same report.

This issue pushed for stricter measures at the Dodger Stadium but now it seems things are back to what they were four years ago.