Well, the I retired as a player for the first time after a season at Boston 13s, and I arrived at match day and was told the stadium announcer was a little uncertain as she was not familiar with the sport. So, I went to the box and the stadium announcer said to me "Help, I don't know what I'm going" and she actually, literally ran away.
So, my career in stadium announcment started in the style of a bemused plastic Humphrey Littleton.
Most stadium announcement was terrible, they would just say what people could actually see anyway and was always positive. I spoke about it like I would to someone less familiar with sport with whom I was sharing a pint. I was technically terrible, but rather popular. I gave it up after one year.
PS: The odd thing was, "Yup, same again" or "he'll be disappointed, he is usually good" were refreshing to an audience used to "Made four yards!!!! AWESOME!!!!"