A capable top-order batsman and wicketkeeper, Ojha made his first-class debut for Madhya Pradesh in 2000-01. He has tasted success in the limited-overs format and made his mark in the 2008-09 Challenger Trophy, scoring 96 for India Green. The Rajasthan Royals came calling during the second season of the IPL and he made a mark in his second game, smashing a half-century. His first tryst with the big league was when he was included as a back-up wicketkeeper in the limited-overs sides for India's tour of Zimbabwe, when the selectors decided to rest several senior players, including MS Dhoni.