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Series Stats : 1973
The following data is compiled from all races run with this series.
Class: Wingless
| Champion | Rollie Beale |
| Driver Count | 92 |
| Race Count | 41 |
| Average Car Count | 30 |
| Driver Count at every race | 4 |
| Driver Count running half of the races | 23 |
41 Winning Time Trial Positions
| Time Trial (Average: 3.9) | Count |
| 5 |
| 1st | 8 |
| 2nd | 1 |
| 3rd | 9 |
| 4th | 4 |
| 5th | 5 |
| 6th | 6 |
| 7th | 1 |
| 9th | 1 |
| 11th | 1 |
Count: 41
| Race Date | Track | Race | Car Count | Winner | Story |
| Sunday, March 18, 1973 | Salem,IN | | 35 | Lee Kunzman | Lee Kunzman wins USAC at Salem | |
| Sunday, March 25, 1973 | Reading Fairgrounds,PA | | 29 | Pancho Carter | Pancho Carter wins USAC at Reading Fairgrounds | |
| Sunday, April 1, 1973 | Eldora,OH | | 35 | George Snider | George Snider wins USAC at Eldora | |
| Sunday, April 8, 1973 | Winchester,IN | | 39 | Jerry Poland | Jerry Poland wins USAC at Winchester | |
| Saturday, April 14, 1973 | Reading Fairgrounds,PA | | 27 | Lee Kunzman | Lee Kunzman wins USAC at Reading Fairgrounds | |
| Sunday, April 22, 1973 | Queen City,OH | | 39 | Bruce Walkup | Bruce Walkup wins USAC at Tri-County | |
| Sunday, April 29, 1973 | Eldora,OH | | 38 | Sammy Sessions | Sammy Sessions wins USAC at Eldora | |
| Saturday, May 5, 1973 | Terre Haute,IN | Tony Hulman Classic | 43 | Joe Saldana | Joe Saldana wins USAC at Terre Haute | |
| Saturday, May 12, 1973 | IRP,IN | | 44 | Lee Kunzman | Lee Kunzman wins USAC at IRP | |
| Sunday, June 3, 1973 | Knoxville,IA | | 24 | Tom Bigelow | Tom Bigelow wins USAC at Knoxville | |
| Friday, June 8, 1973 | State Fairgrounds,IN | Twin 50s 1 | 47 | Billy Shuman | Billy Shuman wins USAC at State Fairgrounds | |
| Friday, June 8, 1973 | State Fairgrounds,IN | Twin 50s 2 | 28 | Don Nordhorn | Don Nordhorn wins USAC at State Fairgrounds | |
| Saturday, June 9, 1973 | Terre Haute,IN | | 33 | Mel Cornett | Mel Cornett wins USAC at Terre Haute | |
| Friday, June 15, 1973 | Berlin,MI | | 29 | Rollie Beale | Rollie Beale wins USAC at Berlin | |
| Sunday, June 17, 1973 | Winchester,IN | | 30 | Tom Bigelow | Tom Bigelow wins USAC at Winchester | |
| Sunday, June 24, 1973 | Williams Grove,PA | | 21 | Jan Opperman | Jan Opperman wins USAC at Williams Grove | |
| Wednesday, July 4, 1973 | Queen City,OH | | 31 | Dave Roahrig | Dave Roahrig wins USAC at Tri-County | |
| Sunday, July 8, 1973 | Salem,IN | | 30 | Sammy Sessions | Sammy Sessions wins USAC at Salem | |
| Friday, July 13, 1973 | Sharon,OH | | 24 | Tom Sneva | Tom Sneva wins USAC at Sharon | |
| Saturday, July 14, 1973 | Toledo,OH | | 26 | Tom Sneva | Tom Sneva wins USAC at Toledo | |
| Sunday, July 22, 1973 | New Bremen,OH | | 33 | Tom Sneva | Tom Sneva wins USAC at New Bremen | |
| Friday, July 27, 1973 | Heidelberg ,PA | | 27 | Rollie Beale | Rollie Beale wins USAC at Heidelberg | |
| Sunday, July 29, 1973 | Winchester,IN | Feature 1 | 33 | Lee Kunzman | Lee Kunzman wins USAC at Winchester | |
| Sunday, July 29, 1973 | Winchester,IN | Feature 2 | 20 | Sammy Sessions | Sammy Sessions wins USAC at Winchester | |
| Sunday, August 5, 1973 | Terre Haute,IN | | 26 | Sammy Sessions | Sammy Sessions wins USAC at Terre Haute | |
| Saturday, August 11, 1973 | Eldora,OH | | 27 | Lee Kunzman | Lee Kunzman wins USAC at Eldora | |
| Sunday, August 12, 1973 | New Bremen,OH | | 23 | Lee Kunzman | Lee Kunzman wins USAC at New Bremen | |
| Saturday, August 18, 1973 | Toledo,OH | | 26 | Lee Kunzman | Lee Kunzman wins USAC at Toledo | |
| Sunday, August 26, 1973 | State Fairgrounds,MN | | 30 | Jerry Hansen | Jerry Hansen wins USAC at State Fairgrounds | |
| Monday, August 27, 1973 | State Fairgrounds,MN | Feature 2 | 20 | Tom Bigelow | Tom Bigelow wins USAC at State Fairgrounds | |
| Monday, August 27, 1973 | State Fairgrounds,MN | Feature 1 | 27 | Tom Sneva | Tom Sneva wins USAC at State Fairgrounds | |
| Sunday, September 16, 1973 | Eldora,OH | | 31 | Pancho Carter | Pancho Carter wins USAC at Eldora | |
| Friday, September 21, 1973 | Reading Fairgrounds,PA | | 27 | Kenny Weld | Kenny Weld wins USAC at Reading Fairgrounds | |
| Saturday, September 22, 1973 | Queen City,OH | | 32 | Tom Sneva | Tom Sneva wins USAC at Tri-County | |
| Saturday, September 22, 1973 | Williams Grove,PA | | 23 | Jan Opperman | Jan Opperman wins USAC at Williams Grove | |
| Sunday, September 30, 1973 | Salem,IN | | 30 | Tom Bigelow | Tom Bigelow wins USAC at Salem | |
| Sunday, October 7, 1973 | New Bremen,OH | | 36 | Tom Sneva | Tom Sneva wins USAC at New Bremen | |
| Sunday, October 14, 1973 | Winchester,IN | Twin 50s 1 | 32 | Pancho Carter | Pancho Carter wins USAC at Winchester | |
| Sunday, October 14, 1973 | Winchester,IN | Twin 50s 2 | 20 | Pancho Carter | Pancho Carter wins USAC at Winchester | |
| Sunday, October 21, 1973 | Eldora,OH | Feature 1 | 34 | Lee Kunzman | Lee Kunzman wins USAC at Eldora | |
| Sunday, October 21, 1973 | Eldora,OH | Feature 2 | 20 | Pancho Carter | Pancho Carter wins USAC at Eldora | |
Drivers running at least half of the races (23)
| Driver | Races | Wins | Avg Finish | Top 5 | Top 10 | Avg TT |
| 1 | Lee Kunzman | 38 | 8 | 6.2 | 24 | 30 | 7.4 |
| 2 | Pancho Carter | 39 | 5 | 11.6 | 10 | 20 | 10.3 |
| 3 | Sammy Sessions | 37 | 4 | 8.4 | 15 | 26 | 8.1 |
| 4 | Tom Bigelow | 30 | 4 | 9.8 | 12 | 19 | 7.5 |
| 5 | Rollie Beale | 41 | 2 | 6.6 | 23 | 34 | 6.9 |
| 6 | Don Nordhorn | 41 | 1 | 9.0 | 15 | 25 | 9.4 |
| 7 | Joe Saldana | 41 | 1 | 12.2 | 5 | 18 | 15.2 |
| 8 | Bruce Walkup | 39 | 1 | 9.1 | 14 | 26 | 10.3 |
| 9 | Mel Cornett | 34 | 1 | 18.1 | 1 | 7 | 19.2 |
| 10 | Jerry Poland | 25 | 1 | 17.7 | 1 | 5 | 18.2 |
| 11 | Billy Cassella | 41 | 0 | 12.9 | 14 | 21 | 12.4 |
| 12 | Rich Leavell | 36 | 0 | 13.6 | 2 | 11 | 15.8 |
| 13 | Johnny Parsons | 34 | 0 | 12.3 | 7 | 19 | 13.0 |
| 14 | Jerry Nemire | 34 | 0 | 19.4 | 0 | 3 | 19.3 |
| 15 | Larry Cannon | 33 | 0 | 14.1 | 5 | 10 | 13.3 |
| 16 | Larry Dickson | 31 | 0 | 15.6 | 2 | 9 | 14.0 |
| 17 | Charlie Masters | 30 | 0 | 13.7 | 6 | 13 | 14.7 |
| 18 | Bill Puterbaugh | 28 | 0 | 17.6 | 2 | 7 | 18.3 |
| 19 | John Toth | 26 | 0 | 20.4 | 1 | 4 | 20.8 |
| 20 | Benny Rapp | 25 | 0 | 18.7 | 1 | 4 | 19.0 |
| 21 | Tony Simon | 24 | 0 | 19.7 | 0 | 3 | 16.3 |
| 22 | Billy Engelhart | 23 | 0 | 17.2 | 1 | 5 | 16.4 |
| 23 | Steve Chassey | 21 | 0 | 25.4 | 0 | 1 | 27.4 |
Drivers NOT running at least half of the races (69)
| Driver | Races | Wins | Avg Finish | Top 5 | Top 10 | Avg TT |
| 1 | Tom Sneva | 20 | 6 | 9.2 | 13 | 13 | 9.4 |
| 2 | Jan Opperman | 3 | 2 | 7.0 | 2 | 2 | 3.7 |
| 3 | George Snider | 17 | 1 | 15.6 | 2 | 7 | 13.1 |
| 4 | Dave Roahrig | 15 | 1 | 16.6 | 1 | 3 | 11.4 |
| 5 | Billy Shuman | 4 | 1 | 9.8 | 2 | 3 | 13.7 |
| 6 | Kenny Weld | 3 | 1 | 8.7 | 2 | 2 | 10.3 |
| 7 | Jerry Hansen | 2 | 1 | 18.0 | 1 | 1 | 18.0 |
| 8 | Gary Bettenhausen | 20 | 0 | 9.6 | 8 | 13 | 9.3 |
| 9 | Bob Pratt | 20 | 0 | 19.3 | 0 | 3 | 21.5 |
| 10 | Bill Koepfer | 20 | 0 | 22.0 | 0 | 2 | 24.9 |
| 11 | Chuck Booth | 19 | 0 | 17.9 | 1 | 4 | 20.6 |
| 12 | Darl Harrison | 19 | 0 | 18.2 | 2 | 4 | 20.1 |
| 13 | Duke Cook | 19 | 0 | 21.4 | 0 | 0 | 17.3 |
| 14 | Karl Busson | 18 | 0 | 12.9 | 4 | 11 | 14.7 |
| 15 | Gordy Lee | 18 | 0 | 20.6 | 0 | 1 | 22.1 |
| 16 | Jackie Howerton | 17 | 0 | 16.2 | 0 | 5 | 16.2 |
| 17 | Steve Shultz | 13 | 0 | 20.5 | 0 | 2 | 25.7 |
| 18 | Jerry Mann | 13 | 0 | 27.9 | 0 | 0 | 29.2 |
| 19 | Gary Ponzini | 11 | 0 | 22.2 | 0 | 0 | 17.9 |
| 20 | Curt Waters | 10 | 0 | 26.1 | 0 | 0 | 26.0 |
| 21 | Danny Johnson | 10 | 0 | 31.3 | 0 | 0 | 31.8 |
| 22 | Larry Rice | 9 | 0 | 25.2 | 0 | 0 | 22.0 |
| 23 | Bob Kinser | 8 | 0 | 21.5 | 0 | 1 | 26.0 |
| 24 | Bob Evans | 8 | 0 | 27.8 | 0 | 0 | 26.2 |
| 25 | Jim McElreath | 7 | 0 | 16.4 | 0 | 1 | 18.0 |
| 26 | Fred Linder | 7 | 0 | 21.9 | 0 | 1 | 23.9 |
| 27 | Sonny Ates | 7 | 0 | 24.1 | 0 | 0 | 24.4 |
| 28 | Bill Burks Jr | 7 | 0 | 30.4 | 0 | 0 | 32.6 |
| 29 | Butch Wilkerson | 6 | 0 | 17.3 | 0 | 0 | 19.6 |
| 30 | Cy Fairchild | 6 | 0 | 21.5 | 0 | 2 | 23.2 |
| 31 | Dee Jones | 6 | 0 | 22.7 | 0 | 0 | 20.8 |
| 32 | John Hubbard | 6 | 0 | 26.8 | 0 | 0 | 31.3 |
| 33 | Steve Cannon | 6 | 0 | 27.2 | 0 | 0 | 24.7 |
| 34 | Todd Gibson | 6 | 0 | 28.2 | 0 | 0 | 23.5 |
| 35 | Ronnie Rough | 5 | 0 | 20.4 | 0 | 0 | 21.5 |
| 36 | Greg Weld | 5 | 0 | 23.2 | 1 | 1 | 20.8 |
| 37 | Ralph Liguori | 5 | 0 | 23.8 | 0 | 0 | 24.4 |
| 38 | Jon Peddie | 5 | 0 | 25.4 | 0 | 0 | 26.8 |
| 39 | Greg Leffler | 5 | 0 | 28.2 | 0 | 0 | 20.0 |
| 40 | Kramer Williamson | 4 | 0 | 12.8 | 1 | 1 | 15.0 |
| 41 | Carl Bergkvist | 4 | 0 | 20.0 | 0 | 0 | 26.8 |
| 42 | Jerry Miller | 4 | 0 | 23.8 | 0 | 0 | 25.8 |
| 43 | Jerry Powell | 4 | 0 | 26.0 | 0 | 0 | 29.0 |
| 44 | Bob Frey | 4 | 0 | 28.2 | 0 | 0 | 26.8 |
| 45 | Jerry Sneva | 4 | 0 | 28.8 | 0 | 0 | 24.2 |
| 46 | Don Brown | 4 | 0 | 33.8 | 0 | 0 | 33.7 |
| 47 | Sheldon Kinser | 3 | 0 | 9.0 | 2 | 2 | 5.5 |
| 48 | Merle Bettenhausen | 3 | 0 | 14.0 | 0 | 1 | 21.0 |
| 49 | Jerry Richert | 3 | 0 | 18.7 | 0 | 0 | 10.0 |
| 50 | Rick Davidson | 3 | 0 | 28.0 | 0 | 0 | 28.0 |
| 51 | John Mahler | 3 | 0 | 29.7 | 0 | 0 | 29.3 |
| 52 | Gary Irvin | 3 | 0 | 33.0 | 0 | 0 | 33.3 |
| 53 | John Batts | 3 | 0 | 35.0 | 0 | 0 | 35.7 |
| 54 | Lee Osborne | 2 | 0 | 5.0 | 1 | 2 | 4.0 |
| 55 | Kenny Brightbill | 2 | 0 | 14.5 | 0 | 0 | 15.0 |
| 56 | Roger Rager | 2 | 0 | 15.0 | 0 | 0 | 24.0 |
| 57 | Dick Tobias | 2 | 0 | 16.0 | 1 | 1 | 17.5 |
| 58 | Arnie Knepper | 2 | 0 | 20.5 | 0 | 0 | 14.0 |
| 59 | Armond Holley | 2 | 0 | 28.0 | 0 | 0 | 29.0 |
| 60 | Greg Hodges | 2 | 0 | 34.0 | 0 | 0 | 34.0 |
| 61 | Jim Hurtubise | 2 | 0 | 35.5 | 0 | 0 | 36.0 |
| 62 | Mike Lloyd | 1 | 0 | 7.0 | 0 | 1 | 17.0 |
| 63 | Art Bisch Jr | 1 | 0 | 14.0 | 0 | 0 | 22.0 |
| 64 | AJ Foyt | 1 | 0 | 21.0 | 0 | 0 | 21.0 |
| 65 | Bill Compton | 1 | 0 | 25.0 | 0 | 0 | 25.0 |
| 66 | Harold Smith | 1 | 0 | 26.0 | 0 | 0 | 16.0 |
| 67 | Jon Backlund | 1 | 0 | 27.0 | 0 | 0 | 22.0 |
| 68 | Jackie Burke | 1 | 0 | 35.0 | 0 | 0 | 38.0 |
| 69 | Ronnie Burke | 1 | 0 | 38.0 | 0 | 0 | 26.0 |
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