It was probably Brad Lincoln.
Not him, specifically, but the series of Lincoln-esque moves — drafting him fourth overall in 2006, ahead of Clayton Kershaw, Andrew Miller, Max Scherzer and Tim Lincecum — that allowed the longest streak of losing seasons in the history of major North American professional sports to march steadily onward. Daniel Moskos ahead of Matt Wieters, financials straits dire enough to force Dave Littlefield to trade Aramis Ramirez, the John Russell era; those were among many things to blame.
It was probably Brad Lincoln. But what if it was Sid Bream?
The first baseman had been a Pirate for portions of six seasons.