You see, Boston had signed Lopez after his release from the Cardinals (and refusing a waiver-claim assignment to the Padres) with just days left in the season. They did that because Lopez projected to rank as a Type B free agent, which would have netted Boston a first-round supplemental pick. All Lopez had to do was decline Boston's offer of arbitration (which he agreed to do before the team signed him) and hit the market hoping for a major league deal.
Key word: major league deal.
That's what's required to gain the pick. However, Tampa signing Lopez to a minor-league deal gives Boston nothing.
And even if Lopez makes the Opening Day roster -- a distinct possibility -- it is unlikely Boston could win a petition to be awarded a first-round supplemental pick. As Baseball Toaster founder Ken Arneson relayed via Twitter, the Blue Jays signed Type B free agent Shannon Stewart to a farm deal in 2008, and he made the Opening Day roster. Oakland did not get a first-round supplemental pick, so you have to think Boston would be in the same boat.
-- Evan Brunell