I had one that close... at the all star game at Fenway in 99. It was during batting practice. Our seats were along right field wall near Pesky's pole. At that hour the sun is behind home and you can't see the batters area too well.
Someone crushed one and I was standing there with a beer shooting the shyte and heard a damn ball whizz past my ear. Guy I was talking to got wide-eyed and did the ol' finger and thumb gesture as in "that close".