The pair – both Sussex members – were sitting square of the wicket watching the England player Luke Wright bat with Monty Panesar when they spotted the black, five-inch rock hurtling towards them.
Mr Marszel, an IT consultant, said: “We were sitting at the boundary edge when all of a sudden, out of a blue sky, we saw this small dark object hurtling towards us.
“It landed five yards inside the boundary and split into two pieces.
“One piece bounced up and hit me in the chest and the other ended up against the boundary board.
“It came across at quite a speed – if it had hit me full on it could have been very interesting."
The pair have kept the seemingly extraterrestrial pieces of rock for posterity and said they would be happy for experts to examine them.
Retired Mr Haynes, said: “We were quietly supping our pints, both looked up at the same time and saw a black object coming towards us – we didn’t know what it was.
“If it had come from the other direction we might have suspected someone had thrown it, but we saw it come in straight over the ground from quite a way out – it was definitely a meteorite.”