(SPEEDWAY 1)BIRMINGHAM have made a change at reserve by signing British youngster Daniel Halsey to replace Marek Mroz.The Pole has been released due to concerns over his equipment and fitness, and Halsey joins on loan from Rye House.Promoter Graham Drury said: "We looked at his scores from last season, and he scored six on his visits to Perry Barr. He's also very excited about joining Birmingham."(SPEEDWAY 2)KLAUS Jakobsen scored a 12-point maximum as Stoke secured their best result of the season - an impressive away win at Newport.The Potters continued their recovery from disappointing Easter results against Rye House with a 55-37 win in South Wales.Promoter Dave Tattum said: "We had words with the riders during the week, and they have responded in the right way. Now it's up to us to continue this form."(FIXTURES)MONDAY APRIL 20:SKY SPORTS ELITE LEAGUE: Swindon v Peterborough 7.30, Wolverhampton v Poole 7.30 ELITE LEAGUE KO CUP 1st round 1st leg: Belle Vue v Ipswich 7.30TUESDAY APRIL 21:CHALLENGE: Isle of Wight v Weymouth 7.30WEDNESDAY APRIL 22:SKY SPORTS ELITE LEAGUE: Poole v Wolverhampton 7.30 PREMIER TROPHY: Birmingham v Somerset 7.30, King's Lynn v Newport 7.30THURSDAY APRIL 23:SKY SPORTS ELITE LEAGUE: Coventry v Swindon 8pm, Ipswich v Poole 7.30 PREMIER TROPHY: Redcar v Glasgow 7.30, Sheffield v Workington 7.45CHALLENGE: Bournemouth v Isle of Wight 7.30FRIDAY APRIL 24:BRITISH U21 FINAL: Lakeside 8pmPREMIER TROPHY: Edinburgh v Berwick 7.30, Scunthorpe v King's Lynn 7.30, Somerset v Stoke 7.30CHALLENGE: Plymouth v Weymouth 7.30