With the Lions having lost the First Test but having bounced back to win the second, the deciding rubber will be remembered for a moment of madness from Wallaby great David Campese which allowed Evans to register the match-winning score.
Evans reacted quickest after Campese threw an unexpected pass to full back Greig Martin just yards from the Australian tryline to claim his first Test try in Lions colours in front of a sell out crowd.
"It was from at least eight yards, I believe!" said Evans, who went on to play in two further tours to New Zealand and South Africa in 1993 and 1997 respectively.
"It wasn't one of the longest but it was memorable because, ultimately, it ended up winning the Test series.
"At that moment in the game, I didn't think that was going to be a match-winning moment but it ended up like that. So close was the game, so tight was the scoreline, that small margins were going to determine the outcome."
Ironically, both Evans and Campese would rank among the best widemen ever to play the game yet, while Evans went down in Lions history for his role in the Third Test win, his opposite number was vilified by the Australian press.
"The only downside, from David Campese's perspective, was that he got pilloried and castigated for it, yet the man pretty much singlehandedly won a World Cup for Australia in 1991.
"He was a brilliant player but, thankfully for us, he had a moment of abhoration on that day. When you speak to him, though, it wasn't his fault!"
Campese may choose to erase his Sydney nightmare from his memory if such a thing was possible but for Evans, July 15, 1989 will live long in the memory for all the right reasons.
"It was a big moment. When you're playing against a team that was about to be World Champions a couple of years later, you measure yourselves on these Lions tours. You're up against the best in the world. To score in the final Test, which was tied at that moment in time, you can't ask for a better time to score a try."