The Duke of Cambridge will today attend the Autumn International rugby match between Wales and South Africa for the Prince William Cup.
During a tour of St Giles Trust in London on Wednesday, William said he had his "fingers crossed" for the Welsh side.
Before the match, William will meet injured former players who are beneficiaries of the Welsh Rugby Charitable Trust, of which he is patron.
The trust, set up in 1972, supports players that have been seriously injured while playing rugby in Wales.
After the match, William will meet the captains and coaches of the Wales Under 20, Under 18, women's and sevens squads.