The Mariners have received Major League Baseball’s top honor for sustainability.

The Mariners received the Green Glove Award at MLB’s 2017 Stadium Operations meetings in San Francisco.

Safeco Field’s recycling rate of 96% was enough to edge out perennial winner, the San Francisco Giants, who have received the award every year since it was introduced by MLB in 2008. Over the years, the Mariners have been honored as the top recycler among American League teams.

The Mariners have made Safeco Field one of the most sustainably operated venues in all of sports. Nearly all the waste generated at the ballpark is recycled or composted, diverting thousands of tons of waste from landfills.

The Mariners led the way for MLB by installing LED field lights in 2015, which use about 60% less energy than traditional lights.

There’s also an array of solar panels at the ballpark that generate about 40,000 kWh of power each year.

In 2010, the Mariners became founding members of the Green Sports Alliance along with the Storm, Sounders, Seahawks, Portland Trailblazers and Vancouver Canucks. Today, the Alliance has grown to 500 sports teams and venues from 15 leagues in 14 countries.