Aside from having a Half of Hame MLB career with the New York Yankees, Lou Gehrig also made a tremendous impact off the baseball diamond after raising awareness on amyotrophic lateral sclerosis (ALS).

Years after his untimely demise because of the illness and the MLB has included a permanent date on its calendar that not only celebrates his legendary career with the Yankees but also helps inform people on how to fight ALS.

Starting this year, June 2 will now be known as “Lou Gehrig Day,” which will be an annual and league-wide honoring and celebration of Gehrig’s professional baseball career and his advocacy against ALS. On that day, all MLB players, coaches, and managers will wear special red uniform patches with ‘4 – ALS’ wristbands on them, representing the first baseman’s number with the Yankees, according to Anthony Castrovince of MLB.com

The league will also announce additional ceremonial details for each home park hosting a game on that day at a later date.

“While ALS has been closely identified with our game since Lou’s legendary career, the pressing need to find a cure remains, “ MLB commissioner Rob Manfred said in a statement. ”We look forward to honoring all the individuals and families, in baseball and beyond, who have been affected by ALS and hope Lou Gehrig Day advances efforts to defeat this disease.”

With that announcement, Gehrig, a six-time World Series champion with the Yankees, becomes just the third MLB player to have a day in their honor across the league, after Jackie Robinson and Roberto Clemente.

June 2 is a significant date for Gehrig, as it was on that day in 1925 when he first became New York’s regular first baseman and went on to play 13 seasons for the Yankees. It was also on this day in 1941 when he passed away from the illness after being diagnosed two years earlier.