Could you please help me identify the weed in the attached images?  I added the image in the crushed granite as it is easier to see the entire weed.  It is invading (rapidly) my zorro zoysia lawn.  Zoysia is mature (~5 yrs) strong and healthy and seems to "choke" out other aggressor weeds.  I have previously been able to pull this weed (roots included) and stay ahead, but this year it is growing too fast.

Additionally,  What is the best treatment regimen to eliminate/control it?

Thank you