On Saturday it's Marcos Ayerza versus Julian White, Ben Kay, Lewis Moody, George Chuter and captain Martin Corry as Argentina face England in the Investec Challenge at Twickenham. If you don't have a ticket for the game, then don't worry - it's to be shown live on Sky Sports 2.
That match clashes with BBC Grandstand's coverage of Wales versus Seru Rabeni's Pacific Islanders, so set the timer for DVD or video at home.
Later on Saturday afternoon, BBC2 have live coverage of Ireland versus South Africa, with Geordan Murphy named among the replacements for the hosts.
James Hamilton is on the bench for Scotland, hoping to gain his first cap in the Murrayfield match against Romania, while Martin Castrogiovanni is in the Italy squad to face Australia.
Where to watch:
England v Argentina - Sky Sports 2 live from 2pm; BBC3 highlights from 7pm
Wales v Pacific Islanders - BBC1 Grandstand live from 2pm
Ireland v South Africa - BBC2 live from 4.45pm
Sunday Grandstand, highlights of England v Argentina, Wales v Pacific Islanders, Ireland v South Africa & Scotland v Romania - BBC2 4.30-5.30pm