Karola Bejenaru has been ruled out of the Ulster squad for this weekend's senior inter-provincial tournament at the David Lloyd Centre in Dundonald.
The 17-year-old Romanian-born Windsor player is still suffering from a hamstring injury she sustained at the ITF junior ranking tournament in Donnybrook a fortnight ago.
She was told to rest the injury for three weeks, but the selectors named her in the five-strong squad in the hope that she might have made a speedier than expected recovery.
Physios have informed her that she would not be fit for the weekend and with news of her enforced withdrawal only being confirmed last night, the selectors have not yet named a replacement for the talented teenager.
The rest of the ladies line-up is made up of juniors Lucy Octave, Laura Reid and Emily Beatty along with the experienced Kerri Russell.
The men's team is led by Windsor's Przemek Stec and the Polish native is joined by twins Alex and Gordon Watt along with Ben Fetherston and Aaron Stubbs.
Bejenaru is also a major doubt for the Ulster under-18 squad which will be heading to Castlebar next week for the junior inter-pros.
Ulster squads: Senior: Men: Przemec Stec (Windsor); Alex Watt (Hilden); Aaron Stubbs (Donaghadee); Ben Fetherston (Windsor); Gordon Watt (David Lloyd).
Ladies: Lucy Octave (Donaghadee); Laura Reid (Windsor); Emily Beatty (Downshire); Kerri Russell (ATT); A.N. Other. Non playing captain: to be confirmed.
Junior: Under-14 Boys: Rory Cunningham (Hawarden);Harry Ellsmere (Bangor); Jordan McKeown (St Patricks Racquets);Kyran Maguire (Irvinestown); Caleb Ralston (Portadown).
Under-18 Boys: Alasdair Knox (David Lloyd);Matthew McClurg (Windsor); Ardghal McMahon (Newry and Warrenpoint); Matthew O'Boyle (Bangor);David Weir (David Lloyd).
Under-14 Girls: Megan Chambers (Hawarden); Jessica Leeman (Hawarden); Jessica Moore (Windsor); Mary Parkash (Coleraine); Eimear Smythe (Enniskillen). Non playing captain: Lynsey McCullough
Under-18 Girls: Emily Beattie (Downshire); Karola Bejenaru (Windsor); Annie McCullough (Windsor); Lucy Octave (Donaghadee); Laura Reid (Windsor). Non playing captain: Sam Armstrong.