
Biffle fastest in Happy Hour: #27-Greg Biffle was quickest during the final practice session at Auto Club with a speed of 176.497mph. He was followed by: #11-Brian Scott, #20-Joey Logano, #66-Steve Wallace, #16-Colin Braun, #1-James Buescher, #22-Brad Keselowski, #99-Trevor Bayne, #18-Kyle Busch, and #12-Justin Allgaier. There were no accidents during the session.(2-19-2010)
| Pos | Car | Driver | Team | Time | Speed | # Laps |
| 1 | 27 | Greg Biffle | Red Man Moist Snuff Ford | 40.794 | 176.497 | 26 |
| 2 | 11 | Brian Scott # | AccuDoc Toyota | 41.062 | 175.345 | 20 |
| 3 | 20 | Joey Logano | GameStop/Mario Kart Toyota | 41.160 | 174.927 | 28 |
| 4 | 66 | Steve Wallace | 5 hour Energy Toyota | 41.222 | 174.664 | 22 |
| 5 | 16 | Colin Braun # | Roush-Fenway Ford | 41.238 | 174.596 | 32 |
| 6 | 1 | James Buescher # | Phoenix Racing Chevy | 41.240 | 174.588 | 30 |
| 7 | 22 | Brad Keselowski | Discount Tire Dodge | 41.247 | 174.558 | 28 |
| 8 | 99 | Trevor Bayne | Aaron's Dream Machine Toyota | 41.262 | 174.495 | 23 |
| 9 | 18 | Kyle Busch | Z-Line Designs Toyota | 41.298 | 174.343 | 23 |
| 10 | 12 | Justin Allgaier | Verizon Wireless Dodge | 41.368 | 174.048 | 18 |
| 11 | 6 | Ricky Stenhouse Jr. # | CitiFinancial Ford | 41.393 | 173.942 | 26 |
| 12 | 60 | Carl Edwards | Copart Ford | 41.434 | 173.770 | 20 |
| 13 | 98 | Paul Menard | Richmond/Menards Ford | 41.471 | 173.615 | 18 |
| 14 | 10 | David Reutimann | Beringer Toyota | 41.492 | 173.527 | 28 |
| 15 | 33 | Kevin Harvick | Rheem Tankless Chevy | 41.514 | 173.435 | 23 |
| 16 | 38 | Jason Leffler | Great Clips Toyota | 41.566 | 173.218 | 28 |
| 17 | 15 | Michael Annett | Pilot Travel Centers Toyota | 41.707 | 172.633 | 24 |
| 18 | 35 | Jason Keller | TriStar Motorsport Chevy | 41.749 | 172.459 | 21 |
| 19 | 88 | Kelly Bires | HendrickCars.com Chevy | 41.766 | 172.389 | 24 |
| 20 | 04 | Jeremy Clements | Boudreaux Butt Paste Chevy | 41.834 | 172.109 | 11 |
| 21 | 87 | Joe Nemechek | FrontRowJoe.com Chevy | 41.851 | 172.039 | 20 |
| 22 | 05 | Willie Allen | 31W Insulation/CertainTeed Chevy | 41.869 | 171.965 | 17 |
| 23 | 32 | Brian Vickers | Dollar General Stores Toyota | 41.891 | 171.875 | 25 |
| 24 | 96 | Dennis Setzer | Stratosphere Dodge | 41.928 | 171.723 | 12 |
| 25 | 56 | Kevin Lepage | Start Energy Drink Toyota | 41.956 | 171.608 | 7 |
| 26 | 21 | John Wes Townley | Zaxby's Chevy | 42.002 | 171.420 | 20 |
| 27 | 7 | Danica Patrick | GoDaddy.com Chevy | 42.029 | 171.310 | 35 |
| 28 | 42 | Parker Kligerman # | Smith Ironworks Dodge | 42.066 | 171.160 | 13 |
| 29 | 43 | Scott Lagasse Jr. | Dr. Gadget/everybodygets1.com Ford | 42.079 | 171.107 | 16 |
| 30 | 73 | Derrike Cope | Asset Protect Dodge | 42.081 | 171.099 | 10 |
| 31 | 09 | Scott Riggs | RAB Racing Ford | 42.120 | 170.940 | 23 |
| 32 | 40 | Mike Bliss | Key Motorsports Chevy | 42.145 | 170.839 | 7 |
| 33 | 62 | Brendan Gaughan | South Point Hotel and Casino Toyota | 42.170 | 170.737 | 26 |
| 34 | 89 | Morgan Shepherd | Lagina Plumbing Chevy | 42.215 | 170.555 | 8 |
| 35 | 01 | Mike Wallace | Monster Diesel Chevy | 42.256 | 170.390 | 29 |
| 36 | 70 | Mark Green | ML Motorsports Chevy | 42.261 | 170.370 | 6 |
| 37 | 81 | Michael McDowell | Crusader Staffing Associates Dodge | 42.283 | 170.281 | 10 |
| 38 | 91 | Stephen Leicht | D'Houdt Humphry Mtrspts Chevy | 42.372 | 169.924 | 6 |
| 39 | 23 | Robert Richardson Jr. | Richardson Racing Chevy | 42.530 | 169.292 | 22 |
| 40 | 90 | Danny O'Quinn Jr. | D'Houdt Humphrey Mtrspts Chevy | 42.534 | 169.276 | 5 |
| 41 | 28 | Kenny Wallace | Blue Ox/Zimmzang Chevy | 42.553 | 169.201 | 2 |
| 42 | 07 | Danny Efland | Shred 360/M&W Towing Chevy | 42.562 | 169.165 | 14 |
| 43 | 34 | Tony Raines | Long John Silver's Chevy | 42.567 | 169.145 | 21 |
| 44 | 02 | Andy Ponstein | CarLocate.com Chevy | 42.568 | 169.141 | 14 |
| 45 | 83 | John Borneman III | Twisted X Boots/Red Line Oil Ford | 42.658 | 168.784 | 7 |
| 46 | 92 | Johnny Chapman | K-Automotive Dodge | 42.776 | 168.319 | 9 |
| 47 | 24 | Eric McClure | Hefty Ford | 42.846 | 168.044 | 21 |
| 48 | 61 | Josh Wise | Stratosphere Ford | 43.043 | 167.275 | 11 |
| 49 | 26 | Brian Keselowski | Double Tree Suites Dodge | 43.541 | 165.361 | 20 |
Vickers fastest in opening practice: #32-Brian Vickers was the fastest in the opening practice session for the Stater Bros. 300. His top speed was 177.725mph. #98-Paul Menard was second. The rest of the top 10: #27-Greg Biffle, #38-Jason Leffler, #16-Colin Braun, #60-Carl Edwards, #22-Brad Keselowski, #10-David Reutimann, #20-Joey Logano, and #66-Steve Wallace. #7-Danica Patrick was 37th. #81-Michael McDowell wrecked 5 minutes into the session and will go to a backup car.(2-19-2010)
| Pos | Car | Driver | Team | Time | Speed | # Laps |
| 1 | 32 | Brian Vickers | Dollar General Stores Toyota | 40.512 | 177.725 | 9 |
| 2 | 98 | Paul Menard | Richmond/Menards Ford | 40.596 | 177.357 | 14 |
| 3 | 27 | Greg Biffle | Red Man Moist Snuff Ford | 40.599 | 177.344 | 10 |
| 4 | 38 | Jason Leffler | Great Clips Toyota | 40.660 | 177.078 | 4 |
| 5 | 16 | Colin Braun # | Roush-Fenway Ford | 40.696 | 176.922 | 8 |
| 6 | 60 | Carl Edwards | Copart Ford | 40.705 | 176.882 | 7 |
| 7 | 22 | Brad Keselowski | Discount Tire Dodge | 40.735 | 176.752 | 5 |
| 8 | 10 | David Reutimann | Beringer Toyota | 40.851 | 176.250 | 6 |
| 9 | 20 | Joey Logano | GameStop/Mario Kart Toyota | 40.875 | 176.147 | 3 |
| 10 | 66 | Steve Wallace | 5 hour Energy Toyota | 40.878 | 176.134 | 8 |
| 11 | 18 | Kyle Busch | Z-Line Designs Toyota | 40.925 | 175.932 | 6 |
| 12 | 33 | Kevin Harvick | Rheem Tankless Chevy | 40.975 | 175.717 | 2 |
| 13 | 99 | Trevor Bayne | Aaron's Dream Machine Toyota | 41.053 | 175.383 | 8 |
| 14 | 09 | Scott Riggs | RAB Racing Ford | 41.098 | 175.191 | 4 |
| 15 | 12 | Justin Allgaier | Verizon Wireless Dodge | 41.165 | 174.906 | 8 |
| 16 | 43 | Scott Lagasse Jr. | Dr. Gadget/everybodygets1.com Ford | 41.265 | 174.482 | 9 |
| 17 | 01 | Mike Wallace | Monster Diesel Chevy | 41.376 | 174.014 | 7 |
| 18 | 40 | Mike Bliss | Key Motorsports Chevy | 41.469 | 173.624 | 8 |
| 19 | 81 | Michael McDowell | Crusader Staffing Associates Dodge | 41.478 | 173.586 | 2 |
| 20 | 21 | John Wes Townley | Zaxby's Chevy | 41.506 | 173.469 | 14 |
| 21 | 15 | Michael Annett | Pilot Travel Centers Toyota | 41.543 | 173.314 | 12 |
| 22 | 05 | Willie Allen | 31W Insulation/CertainTeed Chevy | 41.580 | 173.160 | 9 |
| 23 | 6 | Ricky Stenhouse Jr. # | CitiFinancial Ford | 41.645 | 172.890 | 12 |
| 24 | 42 | Parker Kligerman # | Smith Ironworks Dodge | 41.743 | 172.484 | 13 |
| 25 | 87 | Joe Nemechek | FrontRowJoe.com Chevy | 41.764 | 172.397 | 11 |
| 26 | 35 | Jason Keller | TriStar Motorsports Chevy | 41.767 | 172.385 | 2 |
| 27 | 88 | Kelly Bires | HendrickCars.com Chevy | 41.849 | 172.047 | 10 |
| 28 | 1 | James Buescher # | Phoenix Racing Chevy | 41.877 | 171.932 | 13 |
| 29 | 24 | Eric McClure | Hefty Ford | 41.894 | 171.862 | 6 |
| 30 | 96 | Dennis Setzer | Stratosphere Dodge | 41.964 | 171.576 | 3 |
| 31 | 70 | Mark Green | ML Motorsports Chevy | 42.103 | 171.009 | 2 |
| 32 | 04 | Jeremy Clements | Boudreaux Butt Paste Chevy | 42.250 | 170.414 | 7 |
| 33 | 92 | Johnny Chapman | K-Automotive Dodge | 42.325 | 170.112 | 2 |
| 34 | 83 | John Borneman III | Twisted X Boots/Red Line Oil Ford | 42.358 | 169.980 | 6 |
| 35 | 62 | Brendan Gaughan | South Point Hotel and Casino Toyota | 42.365 | 169.952 | 5 |
| 36 | 28 | Kenny Wallace | Blue Ox/Zimmzang Chevy | 42.379 | 169.895 | 3 |
| 37 | 7 | Danica Patrick | GoDaddy.com Chevy | 42.455 | 169.591 | 16 |
| 38 | 73 | Derrike Cope | Asset Protect Dodge | 42.474 | 169.515 | 5 |
| 39 | 61 | Josh Wise | Stratosphere Ford | 42.669 | 168.741 | 3 |
| 40 | 23 | Robert Richardson Jr. | Richardson Racing Chevy | 42.675 | 168.717 | 12 |
| 41 | 26 | Brian Keselowski | Double Tree Suites Dodge | 42.862 | 167.981 | 12 |
| 42 | 34 | Tony Raines | Long John Silver's Chevy | 43.129 | 166.941 | 1 |
| 43 | 07 | Danny Efland | Shred 360/M&W Towing Chevy | 43.391 | 165.933 | 3 |
| 44 | 11 | Brian Scott # | AccuDoc Toyota | 0.000 | 0.000 | 0 |
