White Sox Add “MR” Patch to Jersey Sleeves

Some of you tuning into a game this season may be wondering why the Chicago White Sox are wearing a “MR” patch on their jerseys in 2021.

The White Sox added the commemorative patch featuring the initials “MR” scripted in white on a black oval in memory of Martyl Reinsdorf, the wife of White Sox team chairman Jerry Reinsdorf. The patch features 16 small white circles within the oval on either side of the initials with two large white bands along the top and bottom.

Reinsdorf, who died on June 28th at the age of 85, was more than the wife of the team’s owner, she also designed the White Sox 2005 World Series championship rings as well as the championship rings for 5 of the 6 Chicago Bulls NBA Championships in the 1990s.

The White Sox added a “MR” patch in memory of Martyl Reinsdorf after her death in June 2021

A post on MLB.com following her death goes into detail her thoughts on designing that ’05 championship ring:

“To tell you the truth, there’s not a lot to do with the S-O-X [logo],” Martyl said with a laugh during the 2006 interview. “Any jeweler asked would rather work with a Bull or something like that.

“And the only thing worse or less appealing than ‘Sox’ is a sock. I had told [my husband] for years the logo didn’t lend itself to a really interesting ring.”

The White Sox will continue to wear the “MR” patch on all of their jersey sleeves for the remainder of the 2021 season in honour of Martyl Reinsdorf.