If the Komets defeat the Reading Royals tonight at Memorial Coliseum, they would become the first eighth seed to ever defeat a top seed in a best-of-seven series, according to the ECHL.
There have, however, been victories by eights over ones, just not in a best-of-seven.
In 2005, Greenville defeated Pensacola 3-1.
In 2000, Augusta defeated Florida 3-2, though Augusta was a 10th seed that got to there through a wildcard round.
In 1998, Hampton Roads beat Peoria 3-0.
In 1995, Birmingham beat Wheeling 3-0; the league had a format in which Wheeling was the top seed in the entire playoffs and Birmingham the lowest.
In 1994, in the same format, Louisville beat Knoxville 2-1.
(The best part of this is I got to mention the Augusta Lynx; best nickname in all of hockey.)