In 2020 the season started on July 24th due to the covid-19 pandemic. Nike captured the contracts for all MLB uniforms in 2020 and somewhat controversially added a Nike Swoosh logo to the front of all jerseys. The Cardinals debuted their new STL emblem on the caps this season.
On September 11th after the passing of Lou Brock, the Cardinals wore Lou Brock memorial sleeve patches with a 20 and Lou Brock’s signature through the remainder of the season. The patches were white, cream, gray, or blue to match the uniform they adorned.
When the Cardinals reached the postseason, they wore Postseason cap patches.
On July 24th, opening day, the Cardinals wore a multitude of patches recognizing the BLM movement. The patches and logos read BLM, BLACK LIVES MATTER, or UNITED FOR CHANGE.
On August 16th the Cardinals wore chest patches celebrating the 100th anniversary of the Negro Leagues.
On August 28th and 29th the Cardinals wore Jackie Robinson patches and socks for Jackie Robinson Day.
On September 5th the Cardinals wore a yellow Children’s Cancer ribbon patch.
On September 11th the Cardinals wore memorial cap patches.
On September 22nd the Cardinals wore St. Louis Stars throwbacks.
St. Louis Post Dispatch: July 23, 2020
Players have the option of having a patch with “Black Lives Matter” or “United For Change” on a jersey sleeve on opening day of the pandemic-delayed season. Teams also have the option of stenciling an inverted MLB logo with “BLM” or “United for Change” on the back of the pitcher’s mound during opening weekend games. After discussions among the commissioner’s office and the Major League Baseball Players Association, The Players Alliance and individual players, each player may use a wristband with an inverted MLB logo in which the silhouetted batter is black, the first use of such a logo. Each player also may use a Black Lives Matter batting practice T-shirt or a T-shirt designed or obtained by the player or his team. MLB is lifting cleat restrictions for this season, giving players the ability to put messages for social justice and causes on their spikes.
St. Louis Post Dispatch: September 11, 2020
Honoring Hall of Famer Roberto Clemente, the great former Pittsburgh Pirates star and humanitarian, fellow Puerto Rican Yadier Molina wore Clemente’s No. 21 Thursday, one day after most of the rest of the Puerto Rican-born players wore it on “Roberto Clemente Day.” The Cardinals didn’t play on Wednesday but Molina added the touch to his celebration of Clemente’s career and life by smacking a two-run homer to left field off Detroit lefthander Tarik Skubal in the second inning of the first game of a double-header. Molina, after rounding first base, jumped — as high as he could — in exhilaration. After going around third, he kissed the Clemente patch on his right uniform sleeve and then pointed to the sky as he was crossing the plate.
St. Louis Post Dispatch: September 20, 2020
Patch planned for Brock
A patch with Lou Brock’s retired No. 20 and his elegant autograph will be worn on Cardinals’ jerseys this season as a memo- rial for the Hall of Fame outfielder who died Sunday. The patches were being designed and manufactured earlier this week in hopes they’ll be affixed to the Cardinals’ jerseys by the end of this home stand — and part of the home and road jerseys for the remainder of the season. The patch is similar to the ones the Cardinals wore for Red Schoendienst (No. 2) and Stan Musial (No. 6) after their deaths.
Cardinals Red – PMS 200
Yellow uniform use – PMS 1235
Yellow print use – PMS 108
Navy Blue – PMS 289
Cream – 45% of PMS 7499
Victory Blue – PMS 284