After failing to transfer to the Main Event through his Heat Race earlier in the evening, McElrath earned his way in by winning the Last Chance Qualifier. The runner-up finish makes him the only rider in the Western Regional Championship to finish on the podium at all four rounds. Forkner earned his first career podium result in third.
"We overcame a lot of adversity tonight, and that's kind of what woke me up a little bit," said McElrath. "It's a championship and I've been sort of riding a little cautious. I'm just ready to have that fire again. I felt good the whole race, and that [win] should have been mine. But Justin [Hill] was right there the whole time and he earned that one."
McElrath continues to lead the Western Regional Championship, but his lead over Hill now sits at just four points. Yamalube/Star Racing Yamaha's Aaron Plessinger, who finished fourth after starting ninth, sits 10 points out of the lead in third.
The 2017 Monster Energy Supercross season continues next Saturday, February 4, with the fifth round from Oakland Alameda County Coliseum in Oakland, California. It will mark the first afternoon race of the championship. The action can be seen via tape delay on FS2 at 4:00 p.m. PT / 7:00 p.m. ET.
Monster Energy Supercross - University of Phoenix Stadium - Glendale, Arizona
450SX Class Results
1. Eli Tomac, Cortez, Colo., Kawasaki
2. Chad Reed, Dade City, Fla., Yamaha
3. Ryan Dungey, Belle Plaine, Minn., KTM
4. Cole Seely, Sherman Oaks, Calif., Honda
5. Davi Millsaps, Cairo, Ga., KTM
6. Justin Brayton, Mint Hill, N.C., Honda
7. Blake Baggett, Grand Terrace, Calif., KTM
8. Cooper Webb, Newport, N.C., Yamaha
9. Marvin Musquin, Corona, Calif., KTM
10. Jason Anderson, Rio Rancho, N.M., Husqvarna
450SX Class Championship Standings
1. Ryan Dungey, Belle Plaine, Minn., KTM - 89
2. Marvin Musquin, Corona, Calif., KTM - 74
3. Cole Seely, Sherman Oaks, Calif., Honda - 69
4. Eli Tomac, Cortez, Colo., Kawasaki - 69
5. Davi Millsaps, Cairo, Ga., KTM - 55
6. Ken Roczen, Clermont, Fla., Honda - 51
7. Chad Reed, Dade City, Fla., Yamaha - 49
8. Jason Anderson, Rio Rancho, N.M., Husqvarna - 47
9. Josh Grant, Riverside, Calif., Kawasaki - 46
10. Cooper Webb, Newport, N.C., Yamaha - 44
Western Regional 250SX Class Results
1. Justin Hill, Yoncalla, Ore., Kawasaki
2. Shane McElrath, Canton, N.C., KTM
3. Austin Forkner, Richards, Mo., Kawasaki
4. Aaron Plessinger, Hamilton, Ohio, Yamaha
5. Martin Davalos, Clermont, Fla., Husqvarna
6. Dan Reardon, Menifee, Calif., Yamaha
7. Josh Hansen, Elbert, Colo., Husqvarna
8. Jimmy Decotis, Peabody, Mass., Honda
9. Phil Nicoletti, Cohocton, N.Y., Suzuki
10. Cole Martinez, Rimrock, Ariz., Yamaha
Western Regional 250SX Class Championship Standings
1. Shane McElrath, Canton, N.C., KTM - 92
2. Justin Hill, Yoncalla, Ore., Kawasaki - 88
3. Aaron Plessinger, Hamilton, Ohio, Yamaha - 82
4. Martin Davalos, Clermont, Fla., Husqvarna - 70
5. Austin Forkner, Richards, Mo., Kawasaki - 67
6. Jimmy Decotis, Peabody, Mass., Honda - 55
7. Dan Reardon, Menifee, Calif., Yamaha - 47
8. Jeremy Martin, Millville, Minn., Honda - 40
9. Phil Nicoletti, Cohocton, N.Y., Suzuki - 38
10. Josh Hansen, Elbert, Colo., Husqvarna - 37