Rugby:Ulster captain Johann Muller is expected to be out for up to eight weeks after undergoing surgery on a thumb injury picked up in the province's victory over Glasgow on Friday night.
The 32-year-old South African secondrow underwent a scan after the game that revealed he had ruptured the ligaments around the thumb and he was operated on Sunday.
The former Springbok captain has been a mainstay of the Ulster side since his arrival in Belfast in 2010.
Under his leadership, Ulster are unbeaten this year in both the Pro12 and Heineken Cup campaigns.
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