Disastrous news as Johnny Sexton is ruled out of Scotland game

Johnny Sexton has been ruled out of Ireland's Six Nations opener.

Ireland travel to Murrayfield to face Scotland on Saturday, but will do so without Sexton, who has been nursing a calf injury. The fly-half didn't train today, after his calf tightened in training on Monday. He will miss the game in Edinburgh as a precaution and will be monitored over the next week. https://twitter.com/SportsJOEdotie/status/826421770848714753 Sexton picked-up the injury during Leinster's Champions Cup draw in Castres earlier this month. No replacement has been called-up to Joe Schmidt's team. https://twitter.com/SportsJOEdotie/status/826422841570709504 It gets worse, Simon Easterby also revealed that Peter O'Mahony has been ruled out of this weekend's match after suffering a hamstring injury and is set to undergo a scan. Andrew Trimble is also a doubt after picking up a knock and was limited to just running in today's training session.