Following Friday's preliminary night, drivers have been placed in one of six heats for tonight's 50th Annual World 100 at Eldora Speedway. The top three finishers in each heat race will transfer to the main event. 

First heat
Row 1: Jonathan Davenport, Spencer Hughes
Row 2: Kyle Bronson, Dale McDowell
Row 3: Austin Kirkpatrick, Frank Heckenast Jr.
Row 4: Joseph Joiner, Chris Simpson
Row 5: Jimmy Sharpe Jr., G.R. Smith
Row 6: Kyle Lear, Dale Markham
Row 7: Jon Hodgkiss, Duane Chamberlain

Second heat
Row 1: Zack Dohm, Devin Moran
Row 2: Brandon Sheppard, Chris Ferguson
Row 3: Darrell Lanigan, Dennis Erb Jr.
Row 4: Ryan Gustin, Shannon Babb
Row 5: Jason Papich, Michael Chilton
Row 6: Kent Robinson, Josh Morton
Row 7: Mike Provenzano

Third heat
Row 1: Jensen Ford, Brandon Overton
Row 2: Kyle Strickler, Nick Hoffman
Row 3: Brian Shirley, John Blankenship
Row 4: Kody Evans, Michael Norris
Row 5: Steven Roberts, Travis Stemler
Row 6: Steve Casebolt, Gordy Gundaker
Row 7: Jeff Curl

Fourth heat
Row 1: Johnny Scott, Ricky Thornton Jr.
Row 2: Gregg Satterlee, Chris Madden
Row 3: Hudson O'Neal, Stormy Scott
Row 4: Kyle Hammer, Max Blair
Row 5: Scott James, Ryan King
Row 6: Steve Stultz, Jerry Bowersock
Row 7: Chris Nash

Fifth heat
Row 1: Shane Clanton, Ricky Weiss
Row 2: Bobby Pierce, Mike Marlar
Row 3: Josh Richards, Mark Whitener
Row 4: Boom Briggs, Tyler Erb
Row 5: Mason Zeigler, Jason Feger
Row 6: Billy Franklin, Dustin Nobbe
Row 7: Jason Riggs

Sixth heat
Row 1: Rick Eckert, Scott Bloomquist
Row 2: Tim McCreadie, Jimmy Owens
Row 3: Ashton Winger, Chad Simpson
Row 4: Michael Page, Alex Ferree
Row 5: Cory Hedgecock, Freddie Carpenter
Row 6: Garrett Smith, Tim Lance
Row 7: Caleb Burgess