Here is the first of 24 posts on AAA teams in the 1989 ProCards set. I already showed the Cubs and don't have the Padres set (though I do have the infamous Keith Comstock card). This set features the Brewers' team in Denver, with some nice shots of Mile High Stadium, though every shot is from the same angle which makes it a bit monotonous.
Greg Vaughn was the big star in this set and at the time one of the most-hyped prospects in baseball. You used to constantly hear about Greg Vaughn and Todd Zeile in 1989. Both went on to very solid, if not Hall-of-Fame-worthy careers.
Kiki Diaz is known by his given name, Edgar, on several major league cards.
One theme you will see repeated in these sets are guys showing up on minor league cards years after their last major league card. You will generally only see this on AAA level sets, which is why I like them the best - you get players on the way down as well as on the way up. You last saw Donnie Scott three years earlier on a 1986 Topps card with the Mariners.
Joe Xavier was the closest yet we have come to having a major leaguer with a last name starting with X.