There were horrifying scenes on Friday night at the clash between the Phillies and the Red Sox after a fan fell into the bullpen.

A spectator had to be taken to the trauma centre after falling over a protective railing and into the Red Sox bullpen.

They were reportedly reaching for a baseball in the first inning of Boston's game against Philadelphia at Citizens Bank Park on Friday night.

Medical personnel on the scene reported that the spectator had been taken to Thomas Jefferson University Hospital. It was clear that the players and the rest of the crowd were very shaken up by what was a very serious incident.

Injuries undisclosed

A statement from the Phillies later explained that the fan in question was conscious and responsive when they left the ballpark but the specific injuries were not disclosed.

Later in the game, a Phillies employee was cleaning blood off the concrete in the area where the fan fell.

Fans were quickly cleared away from the railed area after the incident so that medical personnel could attend to the injured spectator. The spectator was strapped to a backboard and taken from the bullpen and field on a stretcher and a cart.

There was a 10-minute delay to the game before the two teams were able to continue.

"It was definitely scary for a lot of us," Boston reliever Josh Winckowski said. "We were all pretty worried, feeling uneasy."

Winckowski said he was concerned that the fan might have died from the fall. Only after getting a call saying that the fan was conscious and responsive were Winckowski and the Boston relievers able to relax.