Though Justice Ruth Bader Ginsburg leaves behind a sparse antitrust legacy, having served as lead author on just one opinion grounded in substantive antitrust law, she will nonetheless go down in the antitrust annals as the justice who attempted to tame antitrust’s most notorious branch of law — price discrimination under the Robinson-Patman Act — and, in Volvo Trucks v. Reeder-Simco (2006), largely succeeded.