As Paul O'Donovan prepares for the lightweight single sculls final, brother Gary tells RTÉ Sport what it's like looking on from the sidelines.

Gary withdrew from the competition in Florida due to a viral infection that had compromised his preparations, but has travelled to the venue to support his brother.

Watch the extended interview above. 

Watch the World Rowing Championships live on RTÉ2 and RTÉ Player from 3.30pm.