[2][3] Tyagi first represented the senior Uttar Pradesh team at the 2007-08 Ranji Trophy competition, making his debut against Orissa in a game which was highlighted by a double-century from Suresh Raina.
It was in this debut match that he took a six-wicket haul, helping his team to an innings victory - a bowling analysis which remains his first-class best.
While Tyagi missed most of the 2008-09 domestic season due to stress fracture, he re-emerged in 2009 IPL with some great spells.
He made his ODI debut in the fifth and final match of India's home series against Sri Lanka in December 2009 at the Feroz Shah Kotla.
He took one wicket as India bowled first, but his debut was cut short when the umpires ended the match midway through the Sri Lankan innings after deeming the pitch to be unsafe.