#2. Chair shots to the head are banned in WWE
More than 15 years ago Eddie Guerrero was part of his final WWE match where he took a chair shot to the head from Mr. Kennedy. Whilst it was later discovered that Guerrero's death wasn't connected to the incident, it was the beginning of a change in WWE.
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Guerrero's death pushed for WWE to create the Wellness Policy which has seen many WWE stars suspended for violations over the years. This also began new concussion protocols for WWE which meant that chair shots to the head were no longer allowed.
Despite this being made a rule a number of years ago, there are several WWE stars who have used chair shots in the heads in matches and have been fined as a result. Triple H and The Undertaker back at WrestleMania 27 is one of the biggest examples, despite both men being seasoned athletes and knowing that it was going against the company rules.
Chairs are still a well-used weapon but the company has been able to adapt the use of the weapon and now strikes are mainly to the mid-section and back where it's considered to be safer.