First-round pairings for professional eliminations Sunday for the 23rd annual O'Reilly NHRA Spring Nationals presented by Pennzoil at Houston Raceway Park, the fifth of 23 events in the NHRA Full Throttle Drag Racing Series.  Pairings based on results in qualifying, which ended Saturday. DNQs listed below pairings.

Top Fuel -- 1. Larry Dixon, 3.772 seconds, 323.19 mph  vs. 16. Del Cox Jr, 4.151, 283.43; 2. Antron Brown, 3.777, 321.96  vs. 15. Spencer Massey, 4.147, 295.08; 3. Tony Schumacher, 3.785, 321.81  vs. 14. Brandon Bernstein, 4.040, 298.47; 4. Doug Kalitta, 3.829, 322.34  vs. 13. Bobby Lagana Jr., 3.960, 306.19; 5. Cory McClenathan, 3.837, 318.54  vs. 12. T.J. Zizzo, 3.955, 299.73; 6. Steve Torrence, 3.839, 313.80  vs. 11. Morgan Lucas, 3.939, 296.63; 7. Shawn Langdon, 3.860, 314.24  vs. 10. Troy Buff, 3.936, 293.28; 8. Terry McMillen, 3.891, 313.73  vs. 9. David Grubnic, 3.916, 312.71. Did Not Qualify: 17. Terry Haddock, 4.698, 284.93.

Funny Car -- 1. John Force, Ford Mustang, 4.021, 316.08  vs. 16. Tony Pedregon, Chevy Impala, 4.296, 260.16; 2. Ashley Force Hood, Mustang, 4.042, 314.90  vs. 15. Jeff Diehl, Chevy Monte Carlo, 4.264, 291.70; 3. Robert Hight, Mustang, 4.051, 312.64  vs. 14. Paul Lee, Chevy Impala SS, 4.246, 298.54; 4. Ron Capps, Dodge Charger, 4.059, 314.09  vs. 13. Cruz Pedregon, Toyota Solara, 4.246, 292.71; 5. Matt Hagan, Charger, 4.091, 311.99  vs. 12. Melanie Troxel, Charger, 4.176, 303.64; 6. Jeff Arend, Solara, 4.095, 309.98  vs. 11. Jim Head, Solara, 4.129, 304.94; 7. Del Worsham, Solara, 4.096, 305.84  vs. 10. Bob Tasca III, Mustang, 4.124, 305.15; 8. Jack Beckman, Charger, 4.097, 311.63  vs. 9. Tim Wilkerson, Mustang, 4.098, 306.12. Did Not Qualify: 17. Todd Simpson, 4.678, 240.47.

Pro Stock -- 1. Mike Edwards, Pontiac GXP, 6.539, 212.43  vs. 16. Rickie Jones, GXP, 6.584, 209.79; 2. Ron Krisher, Chevy Cobalt, 6.548, 211.33  vs. 15. Justin Humphreys, GXP, 6.584, 210.08; 3. Allen Johnson, Dodge Avenger, 6.549, 211.73  vs. 14. Johnny Gray, GXP, 6.582, 210.34; 4. Jeg Coughlin, Cobalt, 6.555, 212.23  vs. 13. Bob Yonke, GXP, 6.579, 210.44; 5. Greg Anderson, GXP, 6.560, 211.53  vs. 12. Kurt Johnson, Cobalt, 6.575, 210.14; 6. V. Gaines, Avenger, 6.563, 211.20 vs. 11. Ronnie Humphrey, GXP, 6.573, 211.26; 7. Jason Line, GXP, 6.566, 211.43  vs. 10. Shane Gray, GXP, 6.571, 210.64; 8. Greg Stanfield, GXP, 6.566, 211.30  vs. 9. Rodger Brogdon, GXP, 6.569, 211.39.
Did Not Qualify: 17. Steve Spiess, 6.590, 210.24; 18. Larry Morgan, 6.600, 210.01; 19. Mike Trumble Jr, 6.601, 209.26; 20. Warren Johnson, 6.606, 210.14; 21. John Nobile, 6.609, 209.79; 22. Jim Cunningham, 6.623, 209.26; 23. Erica Enders, 6.624, 209.23; 24. Steve Schmidt, 6.649, 208.23; 25. Mark Buehring, 6.708, 205.63; 26. John Gaydosh Jr, 6.811, 202.27.

Pro Stock Motorcycle -- 1. Hector Arana, Buell, 6.856, 195.25  vs. 16. Steve Johnson, Suzuki, 7.068, 194.63; 2. Eddie Krawiec, Harley-Davidson, 6.863, 197.10  vs. 15. Redell Harris, Buell, 7.028, 187.26; 3. Andrew Hines, Harley-Davidson, 6.870, 196.93  vs. 14. Junior Pippin, Buell, 7.010, 193.32; 4. Craig Treble, Suzuki, 6.874, 192.91  vs. 13. Mike Berry, Buell, 6.970, 191.05; 5. Matt Smith, Buell, 6.881, 193.65  vs. 12. Angie Smith, Buell, 6.964, 188.46; 6. LE Tonglet, Suzuki, 6.910, 193.79  vs. 11. Karen Stoffer, Suzuki, 6.945, 192.30; 7. Michael Phillips, Suzuki, 6.919, 197.13  vs. 10. David Hope, Buell, 6.932, 193.21; 8. Jim Underdahl, Suzuki, 6.932, 195.28  vs. 9. Douglas Horne, Buell, 6.932, 193.07. Did Not Qualify: 17. Joe DeSantis, 21.167, 235.31.