Abstract: A bottlewasher rack assembly includes a mount hub for mounting to a lower wash and liquid feed system of a warewash machine, and a plurality of interconnected wash arms and rinse arms to which wash liquid and rinse liquid, respectively, are fed from the mount hub. A plurality of upwardly projecting wash feed tubes are provided, each wash feed tube having at least one wash spray nozzle. A plurality of upwardly projecting rinse feed tubes are provided, each rinse feed tube having at least one rinse spray nozzle. The wash feed tubes and the rinse feed tubes are arranged in a multiplicity of side-by-side pairs so that each pair can project upward within a respective upside down bottle placed thereon. A warewash machine incorporating the bottlewasher rack assembly is also described.