King’s Lynn Young Stars captain Danny Phillips suffered a broken femur during the side’s 63-27 loss at Mildenhall on Sunday in the Travel Plus National League.
The 20-year-old picked up some grip coming out of bend four in Heat four which saw him crash underneath the air fence and collide with the back barrier.
Lynn’s sole remaining heat leader Josh Bailey scored just over half his side’s points with 14.
While Young Stars boss Scott Campos was disappointed with the end result in this derby, he admitted the defeat was irrelevant with thoughts surrounding Phillips.
“It was a really nasty incident and it’s really tough on Danny,” Campos said.
“He’s definitely broken his femur and he was air lifted to hospital where he’ll be checked out for any further injuries.
“It’s a real blow for Danny and we send him our best wishes.
“From the team point of view it’s a blow as well. The lads had made an encouraging start and were in it at 11-7 after three.
“But that incident with Danny really knocked the wind out of our sails and we had no answer from there on in.
“We’re in a real dilemma team wise now and myself and Dale (Allitt) need to have a serious sit down and see what we can do.
“We’re realistically two key heat-leaders and a top second string down now and the worrying thing is, is that there’s very little options out there under the rules that currently exist.
“But as I’ve said, right now our thoughts are with Danny and we’ll keep supporters updated when we hear any updates.”
Phillips, who also races for Newcastle in the SGB Championship, came down heavily in his opening ride and received extensive treatment before being taken to hospital via air ambulance.
Mildenhall promoter Kevin Jolly said: “I must praise Jason Gillingham and his paramedic team for their support, care and professionalism today, they are incredibly important to this club and we are very lucky to have them with us.
“Once again our supporters came up trumps, after showing great understanding during the delay whilst Danny was cared for they then responded to an impromptu collection for the Air Ambulance raising an incredible £645.”
Mildenhall: Jordan Jenkins 15, Jon Armstrong 10+2, Connor Mountain 9, Danno Verge 8+3, Danny Halsey 8+1, Luke Ruddick 7+2, Sam Woods 6.
Lynn: Josh Bailey 14, Lewis Whitmore 4, Connor Locke 3+1, Ryan Kinsley 3, Taylor Hampshire 3, Danny Phillips 0, Scott Campos r/r.
National League top 11