The Official Online RBS 6 Nations Store is open. The store has everything you need to get behind your team during the RBS 6 Nations, plus the store is now fully stocked with a much wider range of rugby merchandise.
But he was one of three RBS 6 Nations captains surprisingly left out when the original selection was made.
O'Leary was joined by England's Harry Ellis and Mike Phillips of Wales, the favourite to be the Test No.9.
Scotland's poor form in the RBS 6 Nations looked to have counted against Blair as he battled to shine behind a pack which did not hit the heights it had in the November internationals.
Now however Blair, of Edinburgh, has been selected ahead of Dwayne Peel of Wales, England's Danny Care and compatriot Chris Cusiter as the third scrum-half in the party.
O'Leary was injured just four days after being named in the original 36-man party while on league duty for his club Munster.