(SPEEDWAY 1)SWINDON have snapped up Krzysztof Stojanowski after a string of impressive displays last season.The Pole was a dependable guest rider and he will be joined at reserve by American Ryan Fisher who will double-up from Edinburgh.Robins boss Alun Rossiter said: "Krzysztof is a very determined rider who impressed our supporters last season and Ryan has seen his career revitalised in the past 12-months. We're delighted."(SPEEDWAY 2)PAUL Cooper is Sheffield's sixth confirmed signing for the 2009 season.The hugely-popular Yorkshireman returns for what will be his fifth campaign with the club at Premier League level.He said: "I said to the management at the end of last season that Sheffield was the club I always wanted to ride for next year. I love riding for the Tigers and there's a lot of improvement in me."