And while the influential lock will lead from the front, he accepts the spotlight will largely be focused on the battle at No 10 behind the packs.
England World Cup winner Jonny Wilkinson - pulling the Toulon strings on his return to his old international stamping ground - and current national first choice outside half Owen Farrell will go head-to-head with Borthwick admitting they are similar players in many ways.
"There are a lot of comparisons," said the player who skippered Bath Rugby to Amlin Challenge Cup final glory in 2008.
"Owen is a very young man but his preparation and mindset and competitive spirit are fantastic.
"He has become a leader of the team in his own way and has been involved in the start of this era.
"He is so tenacious and works so hard. We talk about consistency and Owen delivers every week with an abrasive performance and leads by example.
"While he is so physical, aggressive and competitive, he also has this ability to be calm-headed to lead the team around the pitch and make good ¬decisions. How Owen has developed this at a young age is incredible and I feel very fortunate to take the pitch with him.
"He has been a leader of this team since he came into it at 19 years old. We are very fortunate to have him."