Weed ID/eradication

Thanks in advance,

I live in southwest LA. I need help in the ID and most importantly info/advice on how to eradicate the above weed. I know its not the best pictures, but whatever this is that is growing in my zoysia grows faster than the remaining yard and becomes an eyesore. They are small, thin, single stranded vegetations that seem to be spreading. They almost look like a small green onion or chive. They are the darker green in the 2nd picture. I can try and get better pics if needed.

Any help appreciated!