Ireland rugby captain Doris ruled out for up to six months

The 27-year-old sustained the injury in Leinster's 37-34 Champions Cup semi-final defeat to Northampton on May 3.

The back-row was last week left out of the British and Irish Lions' squad for the upcoming tour of Australia by head coach Andy Farrell.

Doris had previously been a frontrunner for the Lions captaincy, which was given to England and Saracens lock Maro Itoje.

"Caelan Doris had a procedure on Friday last week for a shoulder injury which will keep him out of action for between four to six months," Leinster said in a statement.

In addition to the major disappointment of missing what would have been the first Lions tour of his career, Doris is now a doubt for Ireland's internationals later this year.

Ireland, who take on Georgia and Portugal in July, face New Zealand in Chicago on November 1 before hosting Japan, Australia and South Africa in Dublin.