Rory Best feels England and Wales have shaken up plans ahead of the Six Nations

Former Ireland captain Rory Best won four Six Nations titles (PA handout/Sage)

Former Ireland captain Rory Best believes the appointments of Steve Borthwick and Warren Gatland have thrown “a big curveball” into his country’s quest for Guinness Six Nations glory.

Borthwick was last month unveiled as Eddie Jones’ successor as England head coach, just a fortnight after Gatland replaced Wayne Pivac for a second stint as Wales boss.