O'Mahony, Aki may have to sit out Japan fixture

Peter O’Mahony and Bundee Aki face a race against the clock to prove their fitness for Ireland’s meeting with World Cup hosts Japan this Saturday following failed Head Injury Assessments in the win over Scotland.

With Ireland having just a six-day turnaround between games, and HIA protocols requiring a minimum period of the same length for players to complete the required return-to-play tests, the odds appear stacked against both players.