I do that in Halo 1 all of the time, in Halo 2 nades suck too much.

Yeah, but they make you get so much better at using them, since you basically have to plant it directly underneathe them for a kill, or have two within a really good proximity. Fun times.

You cannot kill someone with a single frag grenade unless they are already injured.

this is true but it completely takes out their shield and then you can own them with basically any gun.

Then all you need is a single SMG bullet to finish you off, because it has happened to me numerous times.

I'm pretty sure using a gun wouldn't qualify as killing them with just grenades.

Which is another reason why Halo > Halo 2.

I'm going to experiment with this, because I may just be mistaken and maybe two of their teammates are throwing greands and they are exploding at once to kill me then. I don't know.

It's true a single frag can't kill you if you have full shields. So there's some other contributing factor.

It is not possible to kill someone with a fragmentation grenade if they have full shields. I guess maybe if you bounced it just right and it blew up right in their face it might kill them, but I'm pretty sure it isn't possible.