This is the 15th year that the Rams have been a part of a blood drive with the Red Cross. Organizers expect more than 200 people to donate at the event. Each person donates one pint of blood which could help save up to three lives.
The Red Cross says blood donation is critical especially during this time of year.
"As we get to this time of year, the winter holiday season, the winter weather season, we typically see a drop in blood donations, people either can`t get to blood drives because of winter weather or they`ve got other plans and they`re not really thinking about donating blood," says Dan Fox with the Red Cross.
Dolores Kleinsorge from Affton, who was donating blood at the event, said she donates because "it is life-saving, it`s definitely very important."
Each person who donates receives a t-shirt while supplies last.
The blood drive started at 10am and goes until 7pm tonight.