Something's screwed up.  Perhaps it's a display issue - I have no idea.
14 weeks ago was Feb 16.  Here are my sales between then and now:
Dwight Lusk  	 Sold 	 50 nudos  	 5/19/2008 	  $ 66 666
Dwight Lusk 	Sold 	50 nudos 	5/19/2008 	$ 66 666
Dwight Lusk 	Sold 	50 nudos 	5/19/2008 	$ 66 666
Sergio De Loreto 	Sold 	KK Gimnazija III 	3/17/2008 	$ 701 000
Martin Algeo 	Sold 	S.E Ravens 	3/4/2008 	$ 25 000
Errol Stephens 	Sold 	SC Chuck Norris 	2/25/2008 	$ 80 000 
(I edited out the players I bought in that period.)
When I go to list a player, it says:
You will receive 97% of the sale price after fees.
   - This player has been on your team for 113 days.
   - You have sold 3 players in the past 14 weeks. 
Looks like I've sold 4 players in the past 14 weeks.
(Somewhat unrelated, but for the guy who appears three times, the spacing is different on the first line compared to the latter two.  Perhaps that's related to whatever bug is causing this display problem?  I doubt it but thought I'd mention it.)