Keelan Giles: Ospreys wing a Wales Six Nations injury worry
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Wing Keelan Giles is an injury worry for Wales after limping out of Ospreys' Challenge Cup win over Lyon.
Steve Tandy's side booked their place in the last eight - where they could face Welsh rivals Cardiff Blues - but saw the uncapped 18-year-old go off after 34 minutes of their 47-7 victory.
Wales interim head coach Rob Howley announces his squad for the Six Nations on Tuesday.
"It is too early to tell," Tandy said regarding the severity of the injury.
"He will get scanned and we will see how he puts up in the next 24 to 48 hours."
The Six Nations begins on February 4 with Wales' first match a day later against Italy in Rome.
Giles was an unused replacement when Wales narrowly beat Japan in November in Cardiff.
His Ospreys predecessor Shane Williams is among those to have backed Giles winning international honours early in his career.
But he is thought to be suffering from a hamstring injury, while team-mate Ma'afu Fia suffered an ankle problem as Ospreys ensured they top their qualification group.
"There's no point speculating on them," Tandy told BBC Radio Wales Sport. "We'll just review things."
Ospreys travel to third-placed Newcastle in their final pool game on Saturday.