Help with a large Acrocephalus photographed in Zambia (1 Viewer)

Hi,

I photographed this large Acrocephalus in grassy vegetation at the edge of a small tributary of the Kafue River near Chirundu, Zambia on March 22.

See: https://ebird.org/view/checklist/S43891521

Could it be a Greater Swamp Warbler? Or does it have too much white on the face?

It doesn't look to me like a Great Reed Warbler and there don't seem to be any other good likely options.

Thanks for any suggestions!

The images are less than conclusive for ID purposes Scott, clearly an unstreaked acrocephalus with a short pp.

It could well be a Greater Swamp or a Lesser Swamp? Better images would be required to "nail this" imo.

Cheers