Gavin Henson suffers before departing the fray at Coventry
Lions boss Ian McGeechan has an anxious wait over injuries to South Africa tour candidates Gavin Henson, Mike Tindall and Ian Gough.
The trio - along with James Simpson-Daniel - left the fray injured as Gloucester beat the Ospreys in the EDF Energy Cup semi-final in Coventry.
Henson (suspected ankle) and Tindall (suspected knee) winced in pain as their injuries struck.
All four players left during the first half of Gloucester's 17-0 win.
Gloucester boss Ryan said: "We lost Sinbad [Simpson- Daniel] at half-time and I didn't even know that 'til we came out and saw there were different people on the pitch."
Ospreys boss Sean Holley said Henson's injury was not a recurrence of the calf and ankle problems he has already suffered this season.
"It's the other foot," said Holley. "It looks like a bit of an ankle injury.
"We don't know the extent of it, likewise Ian Gough, so we've got quite an extensive injury list now to contend with as well."