Alan Morris focuses on Thursday evening's all-weather action from Southwell, pinpointing a quartet of runners worth following. 17:00 SOUTHWELL Blue Tulip looks to be a progressive filly and can handle a more competitive race than her recent course and distance win. The 3yo filly is stoutly-bred and duly improved as she went up in distance and the testing trip at Southwell. Rubellite had another sighter over this distance last time and looks the main threat with Cieren Fallo