Ronan O’Gara says Johnny Sexton will be fit for 6 Nations opener

Ireland open their 2017 championship at Murrayfield on February 4 followed a week later by a trip to Rome to face Conor O’Shea’s Italy with Schmidt poised to welcome a squad numbering in the high 30s into camp at Carton House this week to begin preparations.
Sexton, 31, had caused concerns about his potential involvement when he was withdrawn from the Leinster line-up during the first half of their Champions Cup draw with Castres in France on Friday. Leinster reported their fly-half, Ireland’s first choice playmaker, had felt a tight calf muscle midway through the first-half at Stade Pierre Antoine.