I've been jumped once, 3 on 1. I was washing them fool until one of them tripped me. Once you on the ground, all you can do is protect your face and head. Luckily, a group of women drove by and broke it up before they started kicking and punching. Homegirl was like, "what kind of ****** are y'all to jump someone. Punk ***."
Another time, my homey got jumped by 5 guys on campus; by a group of kappas. All because he embarrassed one of them on the basketball court and was talking trash. Someone came and got me. Let just say, they left running when I brought that heat out.
My boy was so pissed, the next day he found one of those cats in the of the Union. Mind you there's a school tour going on, everybody started rushing in a circle. He Knock him upside the head with a pool stick and threw him inside the wall

I stood there to make sure nobody would intervene. One of his homeboy came running in and saw me and just stood. He knew what time it was.
The code I follow, don't ever get involve a 1 on 1 fight unless someone else tries to jump in. If your homey is losing, you pull him from the fight.
That sucker punch and jumping is for suckers..Thats how you get killed; on site or for revenge.