He didn't see any doubles in AZ, which is the point. Now he will.
Here's the net-net for the involved parties' fantasy values, the way I see it:
Boldin - Fewer catches in a run-centric offense, late-season weather, no Fitz on the other side, but he's the obvious #1 target now and Flacco's got a cannon. Stock ever-so-slightly down.
D.Mason - He's been a reception machine for several years here, but is no longer the only show in town and is getting long in the tooth. Stock way down.
T.Heap - All the safety help now rolls to Boldin and Heap owns LB's, but again, fewer receptions and red-zone looks. Stock unchanged.
R.Rice - Tricky one here. His running lanes just became much less crowded, especially on the second level. His YPC and YPR should go up which doesn't help for fantasy, won't be catching 70+ balls again, Boldin is a great downfield blocker. Stock unchanged. (Stock slightly down in PPR formats)
J.Flacco - He's now got the legit #1 target he's been lacking thus far, and he's posted a few very good statistical games w/o one. Look for the offense to shift slightly away from power running to a 50/50 split, and for the Ravens to draft a quick little speed merchant to complement Boldin (Jacoby Ford?). I'll throw out a very early projection of 3,700/23-13. He's a low-end QB1 now a la Eli Manning. Stock way up
Fitzgerald - Ouch. No Warner, no Boldin, no more #1 overall fantasy WR status. It would be easy to say his receptions will jump, but the combination of Leinart and a shift away from the aerial assault on offense offsets the Boldin loss. He'll probably be triple-teamed now, plus they have 2 bruising RB's for goal-line and red zone duties. I'm inclined to rank Moss and Megatron ahead of him now, at least for '10. Stock down.
S.Breaston - Unless AZ drafts a WR high, he slots into Boldin's old role. Unfortunately it's a year too late. There will be so many people watching Fitz that he may be able to run around totally uncovered. Solid fantasy WR3/Flex play though. Stock slightly up.
E.Doucet - Domino effect helps him alot. He's shown flashes in limited action that he can be a competent 3rd target. Keep a close eye on him as a breakout candidate with your endgame draft pick. Stock up.
C.Wells/T.Hightower - Philosophical change helps these 2 more than a WR defection. Wells will be a bellcow ballcarrier between the 10's who doesn't catch much, Hightower will be the 3rd down and goal-line vulture. Just like last year except each will get more touches. Stock unchanged
M.Leinart - I had very little faith in him before this happened, anyway. He won't suck, but his moments will be too few and far between to warrant anything above "Bye-week filler" status this year. Time to sh*t or get off the pot, Matthew. Stock down.