I've never knocked anyone out in 5e yet, PD.  I'm sorry.<br/><br/>Gotta figure out what the rules are.<br/><br/>I am somewhat concerned because I was under the impression you'd be okay so long as you don't reach -10, but then I realized that this is a new system and it's different.<br/><br/>Edit:  Oh, phew.  "... you die if the remaining damage equals or exceeds your hit point maximum."