There's some old time Irish staffs crossed with apbt's that are still flying the flag over here and beating good American imported dogs, there's one or two here that you'd need a shotgun to stop.

This line of staff/pit have been going and competing and winning for decades, before the first apbt's where imported to Ireland and the uk. I believe they are our version of the apbt that never left when dogs we're being brought to the US by Irish and whelsh migrants during the potato famine here. Those dogs where believed to be the foundation dogs of many of the lines of today.