Beginning in the late 1960s, the Senators marked the landing spots of slugger Frank Howard’s longest home runs at RFK by painting the seats white.

In a 2004 interview with The Baltimore Sun, Howard recalled what Senators Manager Ted Williams once said about the publicity stunt: “There are 20 white seats and 17,000 seats in the whole upper deck. You see those 16,980 [other] seats? Those are all the times the [guy] struck out.”

On Tuesday, the Nationals announced that they will begin marking the landing spots of long (i.e., landing in the third deck or Red Porch) and/or significant home runs at Nationals Park in similar fashion. Initially, the seats where the following six home runs landed will be painted a different color than the surrounding seats:

Ryan Zimmerman’s Walk-Off HR, March 30, 2008

Mike Morse’s Red Porch HR, July 20, 2012

Jayson Werth’s Walk-Off HR, NLDS Game 4, October 11, 2012

Adam LaRoche’s Third-Level HR, April 5, 2014

Bryce Harper’s Third-Level HR, April 9, 2014

Bryce Harper’s Third-Level HR, NLDS Game 1, October 3, 2014

Home runs that land in the Red Porch’s red seats will be painted blue. The other home run-marking seats will be painted red.

UPDATE: As a reader points out, Werth’s walk-off landed in the bullpen. That home run will be marked with a plaque instead of a seat. All of the painted seats will also feature small plaques.

A photo illustration denoting where a Frank Howard home run landed at RFK on April 24, 1970.

Thanks to @md_dc, @LetTeddyWin and others who tweeted from Tuesday’s invite-only event for select fans.