Originally Posted by Frater Perdurabo
As I recall, the Sox wore a 1917 replica uniform sometime in mid-1990, if I am not mistaken to commemorate the anniversary of the first game at Old Comiskey. The look proved so popular that the Sox decided to wear their new 1991 uniforms during the last home series of the season.
Those two events weren't necessarily related really. The throwback unis were worn in July in a game against the Brewers as part of the first ever MLB turn-back-the-clock day when Black Jack blew a big lead after Psycho Lyons booted an easy groundball. I think Barry Jones imploded during that game too.
The new '91 uniforms were already approved by MLB at that point. They had just been introduced a week or two earlier (somewhere buried in a box, I've got a VHS tape with Torborg wearing the new road uniform with Paciorek interviewing him on Sox Weekly on Sportschannel).