Saracens pair face lay-offs
Saracens forwards Hayden Smith and Mako Vunipola both face lengthy lay-offs due to injuries.
The reigning Aviva Premiership champions say lock Smith will be out for six weeks after undergoing surgery on a broken bone in his hand.
Prop Vunipola, meanwhile, fractured his foot in training last week and had an operation yesterday. He is expected to be sidelined for up to 12 weeks.