SWINDON Robins team boss Alun Rossiter faces being without his two top riders for this week’s SGB Premiership clash with Wolverhampton Wolves.

The Robins have been hit by a double dose of misfortune, with both skipper Jason Doyle and in-form Australian compatriot Nick Morris looking likely to sit out Thursday’s Abbey Stadium visit by the reigning league champions.

Morris, riding for his Championship side Berwick Bandits at Peterborough Panthers on Friday, was knocked unconscious after a heat one collision.

Morris, who turned 23 earlier this month, must now stand down for a mandatory nine-day period under Speedway Control Bureau (SCB) concussion regulations for riders aged over the age of 20.

That rules him out of the Thursday appointment against Wolves, while his participation for Australia in Event One of the Speedway World Cup at King’s Lynn on Saturday may also be in doubt.

Meanwhile, Doyle defied a broken foot sustained six days earlier to reach the final of the Speedway Grand Prix event in Denmark on Saturday night, but Rossiter believes it unlikely the 31-year-old will risk aggravating the injury further on domestic duty this week.

Doyle had several screws and plates inserted into his right foot in an operation in Poland on Monday, 24 hours after sustaining the injuries while riding for Polish side Zielona Gora.

Despite being reduced to hobbling on crutches up and down the pits in Horsens between races, he reached a fifth consecutive Grand Prix final in Denmark to collect 12 points and join Poland’s Patryk Dudek at the top of the overall standings.

Rossiter told the Advertiser: “He (Doyle) is just a machine - it completely defies everything.

“It’s incredible to do what he did considering what had happened.’’

After Thursday, Swindon don’t race until July 13, with the Speedway World Cup taking centre stage, although Rossiter believes Doyle’s participation in that - Australia race in Event One at King’s Lynn on Saturday - as well as the Robins’ fixture this week must be doubtful.

“When people are going for the world championship it is a different kettle of fish,’’ added the Swindon and Great Britain team boss.

“He’s up there in that position at the top (of the standings) and now he’s got a bit of time, you’d also question whether he wants to ride for Australia (in the World Cup).

“He would have a bit of time to get fit again. It gives him a bit of time to get right for the British Grand Prix on July 22.’’ He added: “It never rains but it pours. There’s obviously a bit of work for us to do now this week.’’