The loss of both these players would be a blow to Tony Pulis as Kitson was looking like his first goal was just around the corner and Shawcross was starting to look at home in the Premier League after regaining his place at the heart of defence.
If, as appears likely, both are force to miss Saturday's clash with the Tigers, Ricardo Fuller should reclaim his place up front after his suspension, whilst Leon Cort looks set to face his former club, pipping Ibrahima Sonko to the starting position.