Wrexham's Chris Bartley will lead off Wales efforts on the opening day of the Olympic Games proper today as he leads Great Britain's Lightweight Men's 4 on the first day of the Games' rowing regatta.
Bartley lead the crew on a successful pre-games world cup campaign, taking the overall title ahead of Denmark and China.
Both crews though promise a tough test for Bartley and his three compatriats.
Taking to the water will mark the end of a long and arduous personal journey for Bartley, who narrowly missed out on a place at the last Olympics in Beijing four years ago.
In the second game of the women's football tournament Great Britain will again make Cardiff's Millennium Stadium their home as they take on Cameroon in a game they should comfortably win.
Hope Powell's side got the Games off to the perfect start with a 1-0 win over New Zealand on the same ground on Wednesday in the opening event of the tournament, two days before the official opening ceremony on Friday.
A crowd officially recorded by governing body Fifa as over 38,000 watched Steph Houghton's second half free kick prove the difference in a tough test for the British side.
Powell controversially overlooked any Welsh players in her final squad for the Olympics, opting instead to pick the majority of her more familiar England charges.
Cardiff will also host the other game in the group with New Zeland taking on Brazil at 1430.