Ian McGeechan will run fitness tests on two players on the morning of the British & Irish Lions opening game against a Royal XV to see if they are fit to play.
There are concerns over an insect bite to Wales No 8 Andy Powell's right hand that became infected. The other worry is over a calf strain sustained by Irish back row man Stephen Ferris.
Powell is due to start the game at the Royal Bafokeng Sports Palace at No 8, while Ferris is among the replacements. No replacements have been named by the Lions as yet should either Powell or Ferris fail their tests.
Lions skipper Sam Warburton says the lessons he and his Welsh colleagues learnt in Australia last summer will stand them in good stead for their return visit with Britain and Ireland's elite next month.
See how Stuart Hogg and Adam Jones got on when they went out to have dinner at home with the Joneses of Pontypridd as part of the 'Host the Pride' community programme instigated by British & Irish Lions head coach Warren Gatland.