The Tipperary Tornado challenged GGG in 2013 and found himself stopped inside three rounds by the Kazakh destroyer.
With his first hand experience, Sky Sports enrolled Macklin to help give Kell Brook some tactical advise ahead of the Sheffield welterweight’s bout with one of the most feared fighters in boxing next month.
The recently-retired Macklin warned Brook of Golovkin’s looping left hook as well as his ramrod jab, and stressed the need to keep moving for the entire twelve rounds.
Watch the segment in full below:
Golovkin v Brook takes place at the O2 Arena in London on Saturday September, live on Sky Box Office.