Salford boss Ian Watson has expressed his frustration at the RFL's disciplinary processes after learning he will be without star players Dan Sarginson and Luke Yates for Saturday's Challenge Cup semi-final against Warrington Wolves.Sarginson has been suspended for two matches for a high tackle on Jamie Shaul, while Yates received a one-game ban for dangerous contact on Danny Houghton.Watson is insistent that neither suspension is justified and is unhappy at the timing of the decision.