Roscommon manager Kevin McStay also shared his thoughts
Mayo manager Stephen Rochford expressed his disappointment with the way his team failed to "drive on" when they had their noses in front against Roscommon.
In a tense all-Connacht fixture in the All Ireland quarter finals at Croke Park, both sides ultimately had to settle for a draw.
Having conceded two early goals, Mayo had wrested back some measure of control when they went in ahead at half time.
But Roscommon were able to build momentum and battle back in the second half to set up a tense finale to the encounter.
Speaking to Off The Ball's Oisin Langan, Rochford did not hide his disappointment that Mayo were not able to extend their advantage around that crucial time as he discussed his full time reaction.
"Disappointed on the basis that we got ourselves into a really good position at half time to drive on and in previous games we'd driven on really well in the third quarter," he said.
"Roscommon scored two points within the first four minutes [of the second half] and the momentum was with them. We wrestled that slightly back and again put ourselves two points up and you're again looking to kick it to three or four.
Roscommon’s manager Kevin McStay and manager Stephen Rochford of Mayo at the final whistle ©INPHO/James Crombie
"Little things... I thought Cillian [O'Connor] had a really good tackle there on Sean Mullooly, referee adjudges it to be a foul, Stephen Coen is done then for picking the ball up from the ground when he's adamant his foot was on that ball. Donal Vaughan is lining up a shot and stands on a water bottle - so all those little things, just when you're looking to kick on and spurt on to that three or four point lead when you're looking for a break, it doesn't come. But look, you've got to make them for yourself as well."
Meanwhile, Roscommon manager Kevin McStay credited his young team for fighting back.
"The heart they showed was fantastic. Proud of the team is definitely the way I feel," he told Off The Ball's John Duggan, adding that Keegan's goal for Mayo "knocked the gloss off" a bright start for Roscommon when they had scored two goals.
He also picked out some aspects of the performance that frustrated him in the first half, saying, "We made some bad choices and our skill execution wasn't good enough, our hand-passing wasn't tight enough and we had some horrible turnovers."
He added: "We had lads kick the ball clean out over the sideline, clean out over the end-line, hand-passing the ball straight to a Mayo man and he only 10 yards away from him, so that was disappointing."
But he feels that issues were a result of inexperience as it was this Roscommon team's "first time here" at that level.
Asked if he had a preference for where the replay would be staged, he was clear that it was what eventually transpired: Bank Holiday Monday and back at Croker: