Pro12 leaders Connacht have a fly-half crisis ahead of Friday's game against Ulster after AJ MacGinty became their third number 10 to be ruled out.
USA player MacGinty suffered a shoulder injury in Saturday's win over Leinster and will be out for around four weeks.
Jack Carty is still out after having his spleen removed in February while Craig Ronaldson will be out for another three weeks because of an ankle injury.
Ulster's Alan O'Connor will miss the game with Nick Williams also a concern.
Lock O'Connor suffered a shoulder in Friday's defeat by Glasgow and looks in danger of missing the remainder of the season.
Flanker Williams went off at half-time in Friday's game because of a shoulder problem and Ulster's director of rugby Les Kiss said on Monday that "it doesn't look good" for the New Zealander.
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