I was looking at baseball-reference.com and Edd Roush's listing and noted the following:
What caught my eye was the Reds received three future Hall of Famers (which, of course, didn't exist at that point in time) for two players. Now granted, Mathewson only pitched in one game for the Reds and McKechnie was elected as a Manager, that's still pretty impressive. Of course, Roush was the greatest centerfielder of his time and was one of the linchpins of the 1919 Reds.July 20, 1916: Traded by the New York Giants with Christy Mathewson and Bill McKechnie to the Cincinnati Reds for Buck Herzog and Red Killefer.