Middlesbrough will come to Hull for the second year running. They won 1-0 in a friendly at Boothferry Park last summer, and Steve McClaren's side will return on Saturday 26th July, kick-off at 3 o'clock.
Leeds will follow Boro the next Friday, kick-off 7:45pm.
A third home game against a Premiership side - probably Newcastle - is also soon to be announced, as is the rest of the pre-season line-up.