Depth charts show way to Six Nations title and could give Ireland the edge | Ben Ryan

With injuries inevitable, coaches need to know who their next cab off the rank is in each key position and Ireland have the system best placed to succeedWhen the Six Nations starts we’ll all enjoy picking and poking over team selection and tactics, how the benches have been used and how the coaches have drawn on all their nous to get the results they need. But one thing you won’t hear much about may end up being one of the most important factors of all in deciding the championship – the depth chart.Every nation will have a spreadsheet with each position on it and then the first choice, second …