I remember that I came across some Adelaide Rio results:
The 1988 draw is on Wiki (4-man at that time): http://en.wikipedia.org/wiki/Tennis_exhibitions_in_1988
In 1989 there has been a McEnroe-Wilander encounter but I don't know more about it.
Doubles Final: McEnroe/Woodforde def. Lendl/Wilander 7/6 6/2 (no idea about the exact date)
1990 (Jan. 11-14) Final: McEnroe def. Edberg 4/6 7/6 6/4
And I've just found out an interesting event at Wirral, 1988 & 1989. It was an event that hadn't been held since 1972. In 1989, McEnroe was beaten at the 2nd round by Jim Pughs. Becker won it on June 24 beating Peter Lundgren in the final 7/5 6/4. At the same time, Lendl played an exhibition in Wentworth where he was beaten by Jonas Svensson.
In 1988, McEnroe made it to the semi-finals and lost to Van Rensburg. David Pate and Leif Shiras were the other two semi-finalists. Chesnokov lost in the quarters to Van Rensburg. Andres Gomez and Johan Kriek also played.
in regards to the 1989 rio international challenge played in adelaide there was no doubles final.
that mac/woodforde v lendl/wilander match was just thrown together at the last minute because pat cash had to forfeit the singles final to stefan edberg earlier on the same evening.
so basically tornament organisers just wanted to give the fans something to watch and organised that doubles match.
the mcenroe-wilander round robin match played earlier in the tornament finished 64 63 to mac.
i have both of the above mentioned matches on dvd and also another of the round robin matches between lendl and mark woodforde.
unfortunetly that match is missing the end with lendl up 64 43.
if anyone could help me out with the final scoreline of that one it'd be much appreciated.
btw prior to 1987 this event was played indoors in canberra usually around november.