Rob Kearney faces a race against time to recover for Ireland’s World Cup opener against Scotland on Sunday.

The 92-cap full-back is believed to have picked up some tightness in his calf during training on Monday, giving head coach Joe Schmidt an injury headache.

#RWC2019 News update. @KearneyRob had some tightening in his calf. He is being monitored by the medical team and is likely to train on Wednesday or Friday. #TeamOfUs #shouldertoshoulder pic.twitter.com/5yFpLerq29

— Irish Rugby (@IrishRugby) September 16, 2019

Kearney will, however, have the chance to prove his fitness on Wednesday to shore up an already depleted backline after the likely loss of powerhouse centre Robbie Henshaw due to a hamstring problem.

Ireland also confirmed fly-half and Johnny Sexton’s back-up Joey Carbery trained fully and probable starter Keith Earls, who is managing a thigh problem, ran on Monday.

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Ireland hope centre Robbie Henshaw will recover quickly from his hamstring injury

Ireland hope centre Robbie Henshaw will recover quickly from his hamstring injury

Ireland scrum coach Greg Feek said: “From what we saw, things are reasonably positive.

“Some of these guys can improve dramatically day-by-day compared to the average human.

“It’s looking positive, so we’ll reassess in the not-too-distant future.”