In 44 years of officiating I have only been hit once by a player.
I was the R in a men's college JV game and the visitors were a jr. college team. The jumper for the visitors was 7'-01"; he was by far the tallest jumper I had ever had take part in a Jump Ball in which I was the tosser. He hit me in my stomach with his foot. It was a little bit harder than a glancing blow but it did cause me to wince and he was very apologetic about it and I told him he had not done anything wrong. It was a great toss by the way too.
I have taken harder shots to the face and chest while umpiring baseball. I have always wear all of the necessary protection equipment required for umpires therefore, my face has always been this ugly,
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MTD, Sr.