LUCKLESS Poole Pirates seem set to lose another rider ahead of the Elite League play-offs after Josh Grajczonek was injured in tonight’s Premier League Challenge.

The Aussie ace suffered a suspected broken collarbone in a heat-16 incident at the individual event in Sheffield.

He joins Vaclav Milik on the sidelines while captain Darcy Ward remains under indefinite suspension for failing an alcohol test prior to the Latvian Grand Prix last month.

Poole's Shamek Pawlicki has only just returned to action following a broken collarbone.