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<P style="font-size: 14pt" align="center"><B>UNITED STATES<BR>
SECURITIES AND EXCHANGE COMMISSION<BR>
<FONT
style="font-size: 12pt">Washington, D.C. 20549 </FONT></B>

<P style="font-size: 18pt" align="center"><B>FORM 8-K</B>

<P style="font-size: 12pt" align="center"><B>CURRENT REPORT<BR>
Pursuant to Section 13 or 15(d) of the Securities
Exchange Act of 1934</B>

<P style="font-size: 10pt" align="center"><B>Date of Report (Date of earliest event reported): September 16, 2008</B>



<P style="font-size: 24pt" align="center"><B>PINNACLE ENTERTAINMENT, INC.<BR>
</B><FONT style="font-size: 10pt">(Exact
name of registrant as specified in its charter) </FONT>
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  <TD width="32%">&nbsp;</TD>
  <TD width="1%">&nbsp;</TD>
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 <TR valign="bottom">
  <TD style="border-bottom: #000000 1px solid"><B>Delaware</B></TD>
  <TD>&nbsp;</TD>
  <TD style="border-bottom: #000000 1px solid"><B>001-13641</B></TD>
  <TD>&nbsp;</TD>
  <TD style="border-bottom: #000000 1px solid"><B>95-3667491</B></TD>
 </TR>
 <TR valign="top">
  <TD>(State or other Jurisdiction of Incorporation)</TD>
  <TD>&nbsp;</TD>
  <TD>(Commission File Number)</TD>
  <TD>&nbsp;</TD>
  <TD>(IRS Employer Identification No.)</TD>
 </TR>

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  <TD width="49%">&nbsp;</TD>
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  <TD style="border-bottom: #000000 1px solid"><B>3800 Howard Hughes Parkway Las Vegas, Nevada<BR>
</B></TD>
  <TD>&nbsp;</TD>
  <TD style="border-bottom: #000000 1px solid"><B>89169</B></TD>
 </TR>
 <TR valign="top">
  <TD>(Address of Principal Executive Offices)</TD>
  <TD>&nbsp;</TD>
  <TD>(Zip Code)</TD>
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<P style="font-size: 10pt" align="center">Registrant&#8217;s telephone number, including area code: <B>(702)
784-7777</B>
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  <TD style="border-bottom: #000000 1px solid" nowrap><B>N/A<BR>
</B></TD>
 </TR>
 <TR>
  <TD nowrap>(Former name or former address if changed since last report.)</TD>
 </TR>

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<P style="font-size: 10pt" align="left">Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

<P style="font-size: 10pt" align="left"><FONT face="Wingdings">o</FONT> Written communications pursuant to Rule 425
under the Securities Act (17 CFR 230.425)<BR>
<BR>
<FONT face="Wingdings">o</FONT> Soliciting material pursuant to Rule
14a-12 under the Exchange Act (17 CFR 240.14a-12)<BR>
<BR>
<FONT face="Wingdings">o</FONT> Pre-commencement
communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))<BR>
<BR>
<FONT
face="Wingdings">o</FONT> Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR
240.13e-4(c))<BR>


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<P style="font-size: 10pt" align="left"><B>Item&nbsp;8.01 Other Events.</B>

<P style="font-size: 10pt; text-indent: 2%" align="left">On September&nbsp;16, 2008, Pinnacle Entertainment, Inc.
issued a press release announcing that its wholly-owned subsidiary, PNK (Kansas), LLC, has withdrawn its application to
be selected as a lottery gaming facility manager for the Northeast Kansas Gaming Zone. A copy of this press release is
attached as Exhibit&nbsp;99.1 to this Current Report on Form 8-K and is incorporated herein by reference.

<P style="font-size: 10pt" align="left"><B>Item&nbsp;9.01 Financial Statements and Exhibits.</B>

<P style="font-size: 10pt" align="left">(d)&nbsp;<I>Exhibits.</I> <BR>
&nbsp;
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<DIV style="margin-left: 0px; text-indent: 0px"><B>Exhibit&nbsp;No.</B></DIV>
</TD>

  <TD>&nbsp;</TD>
  <TD valign="top" align="left" style="border-bottom: #000000 1px solid"><B>Description</B>
&nbsp;</TD>

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<DIV style="margin-left: 0px; text-indent: 0px">Exhibit&nbsp;99.1 </DIV>
</TD>
  <TD>&nbsp;</TD>
  <TD valign="top" align="left">Press release dated September&nbsp;16, 2008, issued by Pinnacle Entertainment, Inc.</TD>
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<P style="font-size: 10pt" align="center"><B>SIGNATURE</B>

<P style="font-size: 10pt; text-indent: 2%" align="left">Pursuant to the requirements of the Securities Exchange Act of
1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly
authorized. &nbsp;

<P style="font-size: 10pt; margin-left: 55%" align="left">PINNACLE ENTERTAINMENT, INC.<BR>
(Registrant)

<P style="font-size: 10pt" align="left">Date: September&nbsp;17, 2008

<P style="margin-top: -11pt; font-size: 10pt; margin-left: 55%" align="left">By: <U>/s/ Stephen H.
Capp&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</U>
<BR>
Stephen H. Capp <BR>
Executive Vice President and Chief Financial Officer

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<P style="font-size: 10pt" align="center"><B>INDEX TO EXHIBITS</B>
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  <TD width="8%">&nbsp;</TD>
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<TR valign="bottom">
  <TD valign="top" style="border-bottom: #000000 1px solid"><DIV style="margin-left: 0px; text-indent: 0px"><B>Exhibit&nbsp;No.</B></DIV></TD>
  <TD>&nbsp;</TD>
  <TD valign="top" align="left" style="border-bottom: #000000 1px solid"><B>Description</B></TD>
</TR>
<TR valign="bottom">
  <TD valign="top"><DIV style="margin-left: 0px; text-indent: 0px">Exhibit&nbsp;99.1 </DIV></TD>
  <TD>&nbsp;</TD>
  <TD valign="top" align="left">Press release dated September&nbsp;16, 2008, issued by Pinnacle Entertainment, Inc.</TD>
</TR>
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Filed by Bowne Pure Compliance
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 8-K
CURRENT REPORT
Pursuant to Section 13 or 15(d) of the Securities
Exchange Act of 1934
Date of Report (Date of earliest event reported): September 16, 2008
PINNACLE ENTERTAINMENT, INC.
(Exact
name of registrant as specified in its charter)
Delaware
001-13641
95-3667491
(State or other Jurisdiction of Incorporation)
(Commission File Number)
(IRS Employer Identification No.)
3800 Howard Hughes Parkway Las Vegas, Nevada
89169
(Address of Principal Executive Offices)
(Zip Code)
Registrant's telephone number, including area code:
(702)
784-7777
N/A
(Former name or former address if changed since last report.)
Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the following provisions:
o
Written communications pursuant to Rule 425
under the Securities Act (17 CFR 230.425)
o
Soliciting material pursuant to Rule
14a-12 under the Exchange Act (17 CFR 240.14a-12)
o
Pre-commencement
communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
o
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR
240.13e-4(c))
Item 8.01 Other Events.
On September 16, 2008, Pinnacle Entertainment, Inc.
issued a press release announcing that its wholly-owned subsidiary, PNK (Kansas), LLC, has withdrawn its application to
be selected as a lottery gaming facility manager for the Northeast Kansas Gaming Zone. A copy of this press release is
attached as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference.
Item 9.01 Financial Statements and Exhibits.
(d)
Exhibits.
Exhibit No.
Description
Exhibit 99.1
Press release dated September 16, 2008, issued by Pinnacle Entertainment, Inc.
2
SIGNATURE
Pursuant to the requirements of the Securities Exchange Act of
1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly
authorized.
PINNACLE ENTERTAINMENT, INC.
(Registrant)
Date: September 17, 2008
By:
/s/ Stephen H.
Capp
Stephen H. Capp
Executive Vice President and Chief Financial Officer
3
INDEX TO EXHIBITS
Exhibit No.
Description
Exhibit 99.1
Press release dated September 16, 2008, issued by Pinnacle Entertainment, Inc.
4