The pair were weighing in for their six round super bantamweight (122lbs) bout on the ‘Celtic Clash 3: Building Champions’ card, the chief support bout tomorrow night.
The pair have traded verbal blows over the past few weeks and almost came to physical blows today.
Jobstown’s McDonald [2(0)-0] was the first to weigh in, coming in at 120.4lbs, a career lowest and by far his best shape ever.
Seconds later Buckley [1(0)-0] tipped the scales at 120lbs and looked to have packed on some serious muscle since his pro debut in May.
Going for the staredown, McDonald ensured the pair were up-close and personal, before Buckley responded by forcing his head in as matchmaker Stephen Sharpe and Boxing Union of Ireland president Mel Christle intervened.
Watch Carl McDonald v Regan Buckley weigh-in and head-to-head below:
Video courtesy of Mark Buckley