Ireland and Leinster star Jordi Murphy is to miss the Guinness autumn internationals after undergoing shoulder surgery.
The surgery means that Murphy will spend up to 12 weeks on the sidelines for both province and country.
The injury was a long standing one for the flanker and had caused him some discomfort towards the end of last season.
Last season saw Murphy break into the Ireland squad, making his full debut against England in Twickenham.
Murphy's layoff will complicate Head Coach Joe Schmidt's selection for the Ireland squad for the autumn internationals.
Outhalf Jonathan Sexton broke his jaw playing for Racing Metro at the weekend and will be ruled out for two months.