The San Francisco Giants have added a commemorative patch to the sleeve of their jerseys for the upcoming 2020 season.

In recognition of the 20th anniversary of the opening of their current home stadium Pac Bell Park AT&T Park Oracle Park, the Giants will wear a patch reading “20 at 24” on the right sleeve of each of their uniform tops this year.

The patch is black with an overall square shape, “20” is written inside near the top in orange with “AT 24” below it in white. A silhouette of the ballpark’s statue of Willie Mays is in black, trimmed in Giants orange, place in front of the number 20. At the very top of the logo is the Giants’ familiar “SF” logo in a black circle, similar to how it’s placed on the outside stadium signage.

The term “20 at 24” refers to the “20”th anniversary “at 24” Willie Mays Plaza, the address of the stadium.

San Francisco previously wore a patch commemorating a stadium milestone season in 2000 for the inaugural season of Oracle Park AT&T Park Pac Bell Park and again one year prior in honour of the final season at Candlestick Park 3Com Park at Candlestick Point in 1999.

Jerseys featuring this new Giants patch are already available for sale at MLB.com, curiously these jerseys also show a player’s name on the back of the tops — the Giants, of course, do not have a player name on the back of their home cream or alternate black jerseys.

This change is news to me and at this point, I’m treating it as if it were an error was made by the folks running the shop. I will update you with more information if/when I get it.