Rory Best fit to captain Ireland in closing Six Nations match with Scotland

• Hooker shakes off calf niggle as Ireland chase third spot• Tommy O’Donnell comes in at flanker in only changeRory Best has won his fitness battle to captain Ireland in Saturday’s Six Nations clash with Scotland. The Ulster hooker has shaken off a calf niggle in time for Ireland’s final battle of the tournament as they seek to salvage a third-place finish from a frustrating, injury-hit campaign.Tommy O’Donnell has been preferred to Leinster’s Josh van der Flier at openside in Ireland’s only change, with the head coach, Joe Schmidt, mindful of countering Scotland’s impressive breakdown work. C…