Saying that they aren't the same isn't really true. Metcalf was wrestling to the whistle and trying to chase him down yes. however Caldwell was no more in bounds when the shove happened than Wellington was when Cox started his lift. Along with that what move was the attempted shove? Brent made no attempt to cover and the shove would have been to the chest/shoulder area of Caldwell even if the backflip wasn't taking place. Also if you rewatch the match you'll see the shove wasn't attempted until the back flip was happening.
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I disagree. The Metcalf and Cox matches really were quite different. Just to review Metcalf/Caldwell end of match:
Caldwell had built up a 9-3 lead in 3rd period.
:52 sec - Metcalf escapes 9-4
:48 sec - Caldwell takes timeout reportedly for back spasms, for about 1 minute.
match resumes with Metcalf trying to attack and Caldwell backing up.
:15 sec - stall warning against Caldwell
:13 sec - TD Metcalf 9-6.
:10 sec - Metcalf gets off, but Caldwell stays down, completely flat on mat (near edge).
:08 sec - Metcalf is completely off Caldwell looking down at him, as Caldwell continues
to lay face down on mat.
:06 sec - Caldwell gets to his knees and spins out of bounds.
Why Caldwell wasn't called for stalling at this point, or
been given an escape is a mystery to me, since Metcalf wasn't even touching
him.
:05 sec - ref calls OOB, wrestlers back to the center.
:04 sec - Metcalf cuts Caldwell loose, 10-6, and Caldwell starts to run away from
Metcalf.
:02 sec - Caldwell starts to raise hands to begin his double flip, completely in bounds.
:00 sec - Caldwell has completed his first flip with half twist, starting the back flip as
Metcalf is close to contact. Still in bounds. As Caldwell's knees come up, Metcalf
brings his hands in front of him. While it gives the appearance of a shove (mild at
best), it can also be said that if he doesn't bring his hands up, the spinning
Caldwell would've hit Metcalf in the face with his knees (look at the 1:09 time to
see the contact).
After this Caldwell hits lands on the mat, quickly gets up smiling and overjoyed. Metcalf shakes his hand. The announcers say NCSt penalized a team point for premature celebration.
I may be a little biased, but I really don't see this as anything close to what Cox did. Metcalf was merely wrestling to the buzzer. With Caldwell running away and starting the double flip in bounds with 2 sec on the clock, I don't think Metcalf, of all people, is going to stop wrestling, particularly when the buzzer hasn't yet sounded. His momentum (sprinting after Caldwell) at edge of mat, coupled with Caldwell now in his 2nd flip leads to a collision. In retrospect, maybe Metcalf should've not pursued and just given up at 4 or 3 sec, but he's not wired that way. Then the winner Caldwell gets up quickly, celebrates, no injury, and hands were shaken at the end of match.
Cox's lifting Wellington up out of bounds and dumping him straight down on his head on the hardwood floor was far more flagrant and extremely dangerous. I hope Wellington has no lasting brain or neck injury from that.