(SPEEDWAY 1)RUSTY Harrison has become Workington's fifth signing for the 2012 Premier League season.Crowd favourite Harrison is second behind Carl Stonehewer in the club's all-time appearance records, having first raced for the club back in 2001.He joins Richard Lawson, Kenny Ingalls, Adam Roynon and Kyle Howarth as confirmed starters at Derwent Park, with the Comets having 12.5 points available for their final two riders.Promoter Keith Denham said: "We're really glad to have Rusty back in 2012 as he showed real metal and determination in 2011 when he rode for a lot of the season with a knee injury."(SPEEDWAY 2)ADAM Roynon has been unveiled by Dudley as their No.1 and captain for the new National League campaign.Roynon, who will also be racing for Workington in the Premier League, was part of the Heathens' squad in 2011 when he suffered injury setbacks, but was a popular figure at the club.Heathens chairman Nigel Pearson said: "Adam is a great character and what he deserves above all else is a clear run free of injuries."If he goes through the season without any problems, I would expect him to add a point to his starting figure and be right at the top of the National League averages."