Leo Cullen provides an injury update on Jonathan Sexton

Leinster and Ireland captain Jonathan Sexton left the field just 23 minutes into Leinster's 35-5 victory over Dragons on Friday night after the flyhalf was seen grasping at his leg.

However, Leinster boss Leo Cullen has since described Sexton's early departure from the match as "a precaution".

"He's fine," said Cullen when asked about the Ireland captain.

"Johnny's a precaution," added Cullen, who said flanker Max Deegan's knee injury was more of a concern.

Ciaran Frawley was also forced off with what Cullen described as "a bang on his eye" while replacements Andrew Porter and Deegan were departed with knee injuries.

"Max looked the one [that was most concerning] - it's his knee I think," added the Leinster coach.

Sexton's fitness could be a concern for Ireland coach Andy Farrell with Ireland set to finish off their Six Nations campaign against Italy and France on 24 and 31 October before taking on the likes of Wales, England and Georgia in the Autumn Nations Cup.