Derek McInnes has to be "a bit of a salesman" to convince people his Hearts side can win at Ibrox again but is glad to have recent proof.
Hearts have beaten Rangers in both meetings this season, winning 2-0 in Govan in September (watch the highlights above) for a first victory over Rangers since 2020 and first at Ibrox in 11 years.
That was followed by a 2-1 home success in December and McInnes' Premiership leaders are aiming to make it three in a row in Sunday's trip across the M8 to open an eight-point gap over Rangers.
"I think it's a good reference for us," McInnes said of Hearts' previous win at Ibrox.
"It was well documented to me before the game earlier this season how poor our record was as a club at Ibrox.
"Rangers are a good side, they're expected to be up there, they recruited really well in January and they've spent a lot of money so we're well aware it's a difficult game at any time.
"I do think from our point of view going there and winning previously and putting in a good performance shows what can be done. We beat Rangers at Tynecastle as well.
"I think it's good for me in terms of the message. Sometimes as a manger you've got to be a wee bit of a salesman to convince people you can win games.
"Sometimes when you've got those results to back you up it helps with the whole narrative as well."