Attention: Ms. Audrey L. Gale Re: Management Agreement Renewal Dear Ms. Gale:

Exhibit 10.8(b)

June 9, 2009
Xxxxxxxx Trading Company
0000 Xxxxx Xxxxxxxx Xxxxxxx
The Carriage House
Chicago, Illinois 60610

Attention: Xx. Xxxxxx X. Xxxx

     Re:       Management Agreement Renewal

Dear Xx. Xxxx:

We are writing with respect to your management agreement concerning the commodity pool to which reference is made below (the “Management Agreement”). We are extending the term of the Management Agreement through June 30, 2010 and all other provisions of the Management Agreement will remain unchanged.

	•		CMF Xxxxxxxx Master Fund L.P.
	•		Citigroup Diversified 2000 Futures Fund L.P.
	•		SB Diversified Futures Fund L.P.
	•		SB Diversified Futures Fund X.X. XX

Please acknowledge receipt of this modification by signing one copy of this letter and returning it to the attention of Xx. Xxxxxxxx Xxxxx at the address above or fax to 000-000-0000. If you have any questions I can be reached at 000-000-0000.

Very truly yours,

CITIGROUP MANAGED FUTURES LLC

By:		/s/ Xxxxxxxx Xxxxx Xxxxxxxx Xxxxx
		Chief Financial Officer & Director

XXXXXXXX TRADING COMPANY

By:		/s/ Xxxxxxx Xxxxxxxx
		Print Name: Xxxxxxx Xxxxxxxx
JM/sr