Alex Revell squandered an early opportunity to put the League Two side ahead on Saturday before Andy Webster flashed a header over from close range after 30 minutes. But Hearts took the lead two minutes into the second half when Sutton slotted home from five yards from Ryan McGowan's pin-point cross. Revell headed just wide and recent signing Kieran Agard was denied by Jambos goalkeeper Jamie MacDonald late on. Hearts, who have won three of their four pre-season games, open their SPL campaign at home to St Johnstone next Saturday.