O'Hara's footballing talent was obvious from early years and played for Scotland Schoolboys. He attracted attention playing for Shettleston with several senior clubs interested in the speedy teenager. He signed for Falkirk where he competed for the winger positions with Willie Sinclair and Tommy Murray. The mercurial O'Hara played a huge role in Falkirk's run to win the 1957 Scottish Cup. The Scotland Under 23 selectors chose four Falkirk players for the squad to play Netherlands at Tynecastle on 23 October 1957. The four were O'Hara, Alex Parker, Jimmy McIntosh and Bert Slater. From that Scotland side O'Hara, Parker, Alex Young and Alex Scott all moved to the Merseyside club not long afterwards. Parker was the outstanding talent in the Falkirk team and his move to a bigger club was considered inevitable. Everton moved in with an £18,000 fee to sign Parker and O'Hara in a double swoop in Summer 1958.
Everton
Parker thrived at Everton and was an important part of their 1962-62 Football League Championship win. O'Hara though found the challenge at Goodison more difficult. He played in 29 league games for The Toffees in which he scored twice before leaving in season 1959/60.
Rotherham United
He joined Rotherham where he scored 3 goals in the 20 league games he played in until the summer of 1961 scoring three goals in his 20 league games.
Morton
He returned to Scotland and played a season with Morton scoring five goals in the 29 league games he played.
Barnsley
O'Hara returned to South Yorkshire to end his UK career at Barnsley between 1962 and '65. At Oakwell he played on either wing scoring 36 League goals in a league career of 127 matches.
Bloemfontein City
He then played in South Africa for Bloemfontein City in the National Football League during the Apartheid era. The NFL in the 1960s and 70s offered a final pay-day for UK players late in their careers. Many went to South Africa in the close season and guested for clubs. FIFA had banned clubs, but not individual players, from playing in South Africa. He played in South Africa for Bloemfontein City, Westview Apollon and Port Elizabeth City. O'Hara was flown from South Africa by the Falkirk Senior Bairns to attend the 50th Anniversary Dinner for the surviving cup-winners in 2007.
Death
O'Hara died on 10 October 2016 at the age of 80 after a lengthy illness.
