 St. George's form dropped markedly in 1994 and Mackay could only make the Bench for NSW in their 1994 State of Origin series win over Queensland, with NSW coach Phil Gould preferring Bradley Clyde at lock.He made his final test appearance for Australia from the interchange bench in the 1994 mid-season test against France at Parramatta Stadium, but the Dragons poor form, which saw them fall to 11th on the premiership ladder, saw Mackay overlooked for the 1994 Kangaroo Tour bringing down the curtain on his international career.Mackay decided to leave the Dragons due to a poor relationship with coach Brian Smith, later saying, "Brian had signed an extension on his contract and so I felt like I needed a change or I'd go down the drain as a player."