Wales lock Jake Ball will miss most of the 2016 Six Nations Championship because of a knee injury that will sideline him for 10 weeks.

The 24-year-old, capped 15 times by Wales, may require surgery after damaging the medial ligament in his left leg during the Scarlets' 27-26 Boxing Day defeat by Ospreys.

"He's got a bit of a tear and he'll see a consultant to get an accurate view," said Scarlets head coach Wayne Pivac.

"With any luck, it's just a rehab job."

Ball received treatment during the Boxing Day derby, but completed the match.

The Australia-raised lock last featured for Wales in the 54-9 World Cup win over Uruguay.

Wales begin their Six Nations campaign in Ireland on 7 February and conclude it with a home match against Italy on 19 March.