I was barely 13 years old during WrestleMania VI on April 1, 1990, and just about at the height of my pro-wrestling fandom. I watched every televised event and read wrestling magazines, and I had been to a live event at the Blaisdell Arena in Honolulu. I even watched unofficial wrestling-analysis shows that aired in the middle of the night. I was delirious.My favorite wrestler was Brutus “The Barber” Beefcake, who took on “Mr. Perfect,” who had yet to lose in a televised head-to-head matchup. Brutus won. “Mr. Perfect,” a.k.a. Curt Hennig, had finally lost.Hennig died in 2003 at age 44.Of course, the main event at WrestleMania VI was the “Ultimate Challenge,” in which The Ultimate Warrior defeated Hulk Hogan to unify the Intercontinental Championship and the WWF Championship for the first — and so far only — time ever (the WWF changed its name to the WWE in 2002).The Ultimate Warrior, James Hellwig, died two weeks ago at age 54.Here are a few other pieces of information about WrestleMania VI:One match — Earthquake’s defeat of Hercules — featured two wrestlers who are now both dead.It was Andre the Giant’s last major televised match; he died in 1993 at age 46.Dusty Rhodes, who won his first wrestling title in 1968, is 68. His tag-team partner, Sapphire, his opponents “Macho Man” Randy Savage and the Sensational Queen Sherri, and his surprise manager, Miss Elizabeth (who was in a “feud” with Macho Man, her real-life husband), died in 1996, 2011, 2007 and 2003, respectively.Just five of 14 matches featured wrestlers who are all alive today.Here’s the card with all of the televised matches for the night. I’ve marked the ones who are dead in red; it’s one-third of the wrestlers who appeared (12 of 36, plus Miss Elizabeth).For all the dramatized bloodshed of professional wrestling, the card for WrestleMania VI certainly looks like a bloodbath. Is there anything fishy about pro wrestling, or are my intuitions about what percentage of young 1990s athletes should be alive 25 years later just way off?Let’s look at some data.I collected biographical information (including date of birth and date of death, if applicable) from the Internet Wrestling Database on all WWF wrestlers who are/would be younger than 60 in 2014, and who had at least 20 pay-per-view appearances between WrestleMania I in 1985 and the time the WWF was forced to change its name by the World Wildlife Fund in 2002 — for 203 in all.I then calculated each wrestler’s chances of dying between the ages of 25 (roughly around when his or her career may have started) and however old he or she is/would be in 2014, using actuarial tables from the Social Security Administration. Because health technology has improved significantly, I used a 1990 actuarial table to cover years before 2000, a 2000 table to cover years 2000 to 2009, and a 2010 table to cover 2010 to the present.I then broke them down by age groups and compared each group’s death rate with its expected death rate:We can also calculate the probability of so many wrestlers dying in each age group and overall by chance (using binom.dist), and it comes out like so:Note: I calculated each wrestler’s odds individually, but the probabilities in the last column of this table are based on the average probability for each group (which gets us extremely close, though technically it could be calculated precisely).I don’t want to speculate as to the cause of this phenomenon, though a number of theories in varying shades of sinister spring to mind. But it saddens me to think that my 13-year old self was so thoroughly entertained by watching ghosts. Rest in peace.