Svartalfheim

Kull doesnt even feel the head butt which might be a reason of his rather bad intellect. He turns to elec and procceds to merciless bullrush elec1d20+5
Kull ignores arlettes warning and continues his attack

Elec, Attack of opportunity roll and damage followed by your opposing strength check.

Still slightly reeling from the headbutt, Elec steadies himself in anticipation for Krull's bullrush.

Attack check
1d20+3

Damage
1d3+2

Strength check
1d20+2

It's a close match! Elec deflects Kull's attempt at pushing him out if the ring. Elec it's your turn.

"Argh" Elec shouts as he deflects Kull's bull rush. Knowing full well that he have to end the match now. He rushes at Kull.

Strength check
1d20+2

That's a big shove! Could the mighty Kull be defeated by a half-elf? Kull your attack of opportunity, damage roll and strength check please.

Kull notices that elec is almost unconsouis but still charges. While being impressed kull doesnt let his guard down and
(hit dice 1d20+6 dmg 1d3+5 and now his strength1d20+5

Kull deciedes that shoving will get him no where so he attempts to grab elec (grapple 1d20+6
and just to carry him out of the ring (strength check 1d20+5

Kull defeats Elec's attempt at a bull rush.

Elec, you now have an attack of opportunity with Kull's grapple attempt (so roll attack roll and damage). Then make a grapple check (for you it's 1d20+3).

After this, we will know if Kull has successfully initiated the Grapple (and rendered Elec unconscious). Elec, if your attack of opportunity succeeds (you need to roll a 12 or better) then the grapple fails and it's your turn as normal. If instead you get a 20 or better on your Grapple check, then the Grapple fails and it's your turn as normal. If you fail both of these, then you are Grappled and Kull will deal unarmed damage to you (he deals enough that you will be unconscious).

"oh come on" Elec steadies himself as Krull tries to grapple him.

Attack of opportunity
1d20+3

Damage
1d3+2

Grapple check
1d20+2