Securities and Exchange Commission
                            Washington, D. C. 20549

                                Schedule 13G
                   Under the Securities Exchange Act of 1934
                             (Amendment No. 2)

                           Pinnacle Entertainment, Inc.
                                   Common Stock
                               CUSIP Number 723456109


Date of Event Which Requires Filing of this Statement:     December 31, 2002

CUSIP No. 723456109

         1)     Name of reporting person:
                  Legg Mason, Inc.
                 Tax Identification No.:
                  52-1200960

         2)     Check the appropriate box if a member of a group:
                  a)     n/a
                  b)     n/a

         3)     SEC use only

         4)     Place of organization:
                  Maryland

Number of shares beneficially owned by each reporting person with:
         5)   Sole voting power:          - 0 -
         6)   Shared voting power:        1,809,720
         7)   Sole dispositive power:     - 0 -
         8)   Shared dispositive power:   1,809,720

         9)   Aggregate amount beneficially owned by each reporting person:
                  1,809,720

         10)  Check if the aggregate amount in row (9) excludes certain shares:
                  n/a

         11)    Percent of class represented by amount in row (9):
                  6.98%

         12)    Type of reporting person:
                  HC, CO
           ______________________________________________________________
         Item 1a)     Name of issuer:
                           Pinnacle Entertainment, Inc.

         Item 1b)     Address of issuer's principal executive offices:
                           230 North Brand Boulevard, Suite 1100
                           Glendale, CA  91203-2380

         Item 2a)    Name of person filing:
                           Legg Mason, Inc.

         Item 2b)    Address of  principal business office:
                           100 Light Street
                           Baltimore, MD  21202

         Item 2c)    Citizenship:
                           Maryland Corporation

         Item 2d)    Title of class of securities:
                           Common Stock

         Item 2e)    CUSIP number:     723456109

         Item 3)     If this statement is filed pursuant to Rule 13d-1(b),
                           or 13d-2(b), check whether the person filing is a:
         (a)    [   ]    Broker or dealer under Section 15 of the Act.
         (b)    [   ]    Bank as defined in Section 3(a) (6) of the Act.
         (c)    [   ]    Insurance Company as defined in Section 3(a) (6) of
                                the Act.
         (d)    [   ]    Investment Company registered under Section 8 of the
                                Investment Company Act.
         (e)    [   ]    Investment Adviser registered under Section 203 of the
                                Investment Advisers Act of 1940.
         (f)    [   ]     Employee Benefit Plan, Pension Fund which is subject
                                to ERISA of 1974 or Endowment Fund; see
                                240.13d-1(b)(ii)(F).
         (g)    [ X ]    Parent holding company, in accordance with
                                240.13d-1(b)(ii)(G).
         (h)    [   ]    Group, in accordance with 240.13d-1(b)(1)(ii)(H).

         Item 4)    Ownership:
         (a)     Amount beneficially owned:             1,809,720

         (b)     Percent of Class:  6.98%

         (c)     Number of shares as to which such person has:
                  (i)   sole power to vote or to direct the vote:
                                    -  0 -
                  (ii)  shared power to vote or to direct the vote:
                                    1,809,720
                  (iii) sole power to dispose or to direct the disposition of:
                                    - 0 -
                  (iv) shared power to dispose or to direct the disposition of:
                                    1,809,720

         Item 5)    Ownership of Five Percent or less of a class:
                           n/a

         Item 6)    Ownership of more than Five Percent on behalf of another
                        person:

                           Various accounts managed by the investment advisory
                           subsidiaries described in Item 7 have the right to
                           receive or the power to direct the receipt of
                           dividends from, or the proceeds from the sale of
                           shares of Pinnacle Entertainment, Inc.

                           Accounts managed by LMM, LLC, in the aggregate,
                           have the right to receive or the power to direct
                           the receipt of dividends from, or the proceeds from
                           the sale of, 1,750,000 shares, or 6.75%, of the
                           total shares outstanding of Pinnacle Entertainment,
                           Inc.

                           The interest of one account, Legg Mason Opportunity
                           Trust, a portolio of Legg Mason Investment Trust,
                           Inc., an investment company registered under the
                           Investment Company Act of 1940 and managed by LMM,
                           LLC, amounted to 1,750,000 shares or 6.75% of the
                           total shares outstanding.

         Item 7)    Identification and classification of the subsidiary which
                                acquired the security being reported on by the
                                parent holding company:

                           Legg Mason Trust, fsb, investment adviser
                           Legg Mason Wood Walker, Inc., investment adviser
                                    and broker/dealer with discretion
                           LMM, LLC, investment adviser

         Item 8)    Identification and classification of members of the group:
                           n/a

         Item 9)    Notice of dissolution of group:
                           n/a

         Item 10)   Certification:

                           By signing below I certify that, to the best of my
         knowledge and belief, the securities referred to above were acquired
         and are held in the ordinary course of business and were not acquired
         and are not held for the purpose of or with the effect of changing or
         influencing the control of the issuer of the securities and were not
         acquired and are not held in connection with or as a participant in
         any transaction having that purpose or effect.

                                     Signature
                                    -----------

                           After reasonable inquiry and to the best of my
         knowledge and belief, I certify that the information set forth in this
         statement is true, complete and correct.

         ---------------------------
         Date - February 13, 2003

         Legg Mason, Inc.


         By____________________________________________________
                 Timothy C. Scheve, Sr. Ex. Vice President

                                      Joint Filing Agreement
                                    ---------------------------

                         Each party signing below agrees that this statement is
         submitted as  a joint filing on behalf of all of the undersigned.

         Legg Mason, Inc.


         By _________________________________________
            Timothy C. Scheve, Sr. Ex. Vice President

         LMM, LLC


         By__________________________________________
            Jennifer Murphy, Chief Operating Officer

         Legg Mason Opportunity Trust, a portfolio of
         Legg Mason Investment Trust, Inc.


         By__________________________________________
                 Marc R. Duffy, Vice President