Vunipola to pick and choose
England number eight Billy Vunipola insists he will continue to be used sparingly as a ball carrier in the QBE Internationals.
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Vunipola produced a strong full Test debut in Saturday's 20-13 victory over Australia notable for a couple of bulldozing runs that have been his hallmark at Saracens.
But the 20-year-old was only used on occasion to batter the Wallabies and will continue to be selective against Argentina and New Zealand.
"I concentrated on not trying to force things. If I'm always carrying then people target me," he said.
"If I pick and choose I'm more likely to make a break or offload.
"We talked during the week about not trying to force things and I think I did that well.
"In the Toulouse game recently I forced it a little bit and became a bit predictable, but against Australia I was much better."
Vunipola made his first appearance for England alongside older brother Mako and the Saracens back row admits it was a special occasion.
"It was awesome, I don't think having your older brother standing by you for the national anthem can be topped," he said.
"It was such a brilliant experience. I could feel the emotion coming on the bus.
"It was on the bus that I realised this was my lifelong dream, me and my brother's. I hope it's the start rather than the end.
"We talked together, especially at scrum-time because I wanted to give him as much confidence as possible."
Head coach Stuart Lancaster will be assessing his midfield options closely after the centre partnership of Billy Twelvetrees and Joel Tomkins spluttered amid a disjointed backline.
Twelvetrees, who was flattened by Matt Toomua for Australia's try, could make way for Luther Burrell or Kyle Eastmond after struggling against the Wallabies.
England have viewed the Gloucester centre as a key part of their midfield plans, but Burrell's explosive form for Northampton demands his participation at some point this autumn.
Lancaster insists he has the scope to make changes at centre, where injuries to Brad Barritt and Manu Tuilagi are testing his depth in the position.
"I'll be looking at whole side in terms of selection. You have to build and win the next game," he said.
"Both Kyle and Luther are genuine options, Luther on form certainly."
Meanwhile, England have called up Bath full-back Anthony Watson to their squad for Saturday's international against Argentina at Twickenham.
Lancaster wants the 19-year-old, who left London Irish for the Recreation Ground during the summer, to train with the senior camp.
"Anthony is a member of the Under-20s squad and is playing well for Bath so this is a good opportunity to give him a taste of this environment," Lancaster said.