The proven core and cover of the Rogue Assassin combine for an unstoppable combination. Bowlers searching for a benchmark control ball on medium oil have found their match in the Rogue Assassin. The Rogue Assassin provides traction in the oil, but with less total hook than a Jackal Ghost or Forge Increased friction and a controllable down lane motion merge for a deadly combination. The proven Sigma core is the standard for benchmark performance. The Sigma core provides stability in the mid-lane that bowlers expect from a medium oil benchmark ball. Coercion HFS is finally available on a medium oil ball! This proven cover has been used for heavier oil covers and is now available on the Rogue Assassin. Coercion HFS is intended to increase friction in moderate to high volume environments to provide a controllable down lane motion.