Here's who advanced to the second round of NASCAR's In-Season Challenge after Atlanta

Saturday's Quaker State 400 at EchoPark Speedway served as the first race of NASCAR's inaugural In-Season challenge, featuring 32 drivers and 16 head-to-head matchups. Following Chase Elliott's victory, here's who advanced to round 2. 

(1) Denny Hamlin vs (32) Ty Dillon 

Advanced: Dillon 

Eliminated: Hamlin 

Hamlin was involved in the Lap 69 crash, while Dillon largely avoided trouble en route to an eighth-place finish and a major upset. 

(2) Chase Briscoe vs (31) Noah Gragson 

Advanced: Gragson

Eliminated: Briscoe 

Both drivers were involved in incidents, but Gragson's No. 4 had less damage than Briscoe's No. 19. Gragson finished 25th to Briscoe's 35th, pulling off another big upset. 

(3) Chris Buescher vs (30) Todd Gilliland 

Advanced: Buescher 

Eliminated: Gilliland 

Buescher finished ninth to Gilliland's 27th after Gilliland suffered crash damage and went 23 laps down. 

(4) Christopher Bell vs (29) Ricky Stenhouse Jr. 

Advanced: Stenhouse Jr. 

Eliminated: Bell 

In another huge upset, Bell was eliminated after being involved in a Lap 57 crash and finishing 30th. Meanwhile, Stenhouse Jr. contended for the win and finished sixth. 

(5) Chase Elliott vs (28) Austin Dillon 

Advanced: Elliott 

Eliminated: Dillon 

Elliott held off the field to win the race, while Dillon was mired in traffic and finished 20th. 

(6) Ty Gibbs vs (27) Justin Haley 

Advanced: Gibbs 

Eliminated: Haley 

Gibbs and Haley both mixed it up with the leaders in the final stage, but faded in the closing laps. Still, Gibbs' 14th-place finish was enough to beat Haley's 23rd-place effort. 

(7) Ryan Blaney vs (26) Carson Hocevar 

Advanced: Hocevar 

Eliminated: Blaney

Blaney was knocked out in the Lap 57 crash, while Hocevar fought his way to a 10th-place finish in an upset bid. 

(8) Alex Bowman vs (25) Joey Logano 

Advanced: Bowman 

Eliminated: Logano 

Logano was a victim of the Lap 69 crash, while Bowman stayed in contention and finished third. 

(9) Bubba Wallace vs (24) Daniel Suarez 

Advanced: Wallace 

Eliminated: Suarez 

Both drivers sustained damage from crashes, but Suarez's knocked him out of the race. Meanwhile, Wallace limped home to a 22nd-place finish, which was enough for him to advance. 

(10) Kyle Larson vs (23) Tyler Reddick 

Advanced: Reddick

Eliminated: Larson

Reddick ran up front all evening and scored a fourth-place finish, while Larson could never work his way to the front and finished 17th. 

(11) Michael McDowell vs (22) AJ Allmendinger 

Advanced: Allmendinger

Eliminated: McDowell

Both drivers were still running at race's end, but Allmendinger's 12th-place finish bests McDowell's 18th-place effort. 

(12) John Hunter Nemechek vs (21) Josh Berry 

Advanced: Nemechek 

Eliminated: Berry 

Both cars were damaged in accidents, but Nemechek's 26th-place finish was enough to beat Berry's 32nd-place finish and procure another upset. 

(13) Ross Chastain vs (20) Erik Jones 

Advanced: Jones 

Eliminated: Chastain

Chastain finished 33rd after being involved in the Lap 69 melee, while Jones finished fifth to easily advance to the next round. 

(14) Zane Smith vs (19) Austin Cindric 

Advanced: Smith 

Eliminated: Cindric 

Cindric was involved in a crash and finished 38th, while Smith battled for the race win and finished a strong seventh. 

(15) Ryan Preece vs (18) William Byron 

Advanced: Preece

Eliminated: Byron

Byron was also involved in the Lap 69 crash, while Preece got away clean and finished 15th. 

(16) Kyle Busch vs (17) Brad Keselowski 

Advanced: Keselowski 

Eliminated: Busch 

Keselowski came home the runner-up to Chase Elliott, while Busch finished 21st and was never in contention for the race win.

The second race of the In-Season challenge will take place at the Chicago Street Race on July 6, with 16 drivers fighting to advance to the next round.