Artificial Turf Returns?

GoGATech

Big Dummy
I think gravity pretty much works the same in either case.
I think what he's referring to is the drainage on these turf fields is superior to natural turf. Even with the best drainage systems, natural turf fields still typically incorporate some sort of crown to aide in water flow. Although with the quality of natural turf and drainage in these college and pro stadiums, you barely even notice a crown on the surface.
 
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