Wigan's Will Grigg (centre) celebrates scoring against Man City with teammates during the FA Cup tie on Monday. Pic/AFP

Will Grigg hailed the greatest moment of his career after shattering Manchester City's quadruple dream by firing Wigan into the FA Cup quarter-finals. The Northern Ireland striker scored the only goal of a stormy fifth-round tie at the DW Stadium on Monday, netting after 79 minutes to stun the runaway Premier League leaders.