Following a middle-of-the-pack finish in the season's opening race, he has now notched back-to-back wins to become the first multiple victor in the top-tier series so far this season while accounting for his fifth top-three finish in the last five races.
The Joe Gibbs Racing driver and 2015 series champion won his seventh career Cup race at Bristol, most among active drivers.
So, too, was Hendrick Motorsports, whose floundering has been well documented, placing two cars in the top five for the first time this season. Brad Keselowski and Ricky Stenhouse Jr. round out the other top spots of the starting lineup for Sunday.
Wallace led six laps, the first of his Cup Series career, before finishing 16th, still the high finish by any rookie in the field.
It didn't last long though. His brother Kurt Busch is a five-time victor at Bristol, but he has not won at the half-mile track since 2006.
The race at Bristol Motor Speedway was postponed till Monday as a result of rain together with Larson outside ahead.
Brad Keselowski won the first two stages and appeared to be the vehicle to beat.
All occurring over a 24-hour-plus span that fought rain, snow and blisteringly cold temperatures in the mountains of Tennessee - that also played host to one of the year's more exciting races of the year.
Keselowski passed Kyle Larson with seven laps remaining in the second stage with a bump-and-run move.
"I feel like every time I race here I nearly get a win", Larson said of his second-place finish.
Keselowski said of his auto: "We are screaming".
The Food City 500 is slated to pick up at 10 a.m. PDT.
BC-CAR-NASCAR-Bristol, 123 Kyle Larson leads when Bristol race resumesAP Photo TNWP103, TNWP102, TNWP101, TNWP104, TNWP113Eds: APNewsNow. Overall I think we can get this race complete but going to leave room for a possible delay or two.
The postponement comes just 46 laps shy of the race becoming official.
Larson has a good vehicle, but the race could take a different dynamic with drivers likely knowing that they are racing to the completion of 500 laps instead of potentially 250.
FINAL PRACTICE: David Ragan had the fastest lap in the final practice Saturday, while Chase Elliott was second fastest and Denny Hamlin third.
Kyle Larson: He opted not to pit coming off the initial restart Monday, which may have cost him the stage win but appeared to help in the long run.
There are always plenty of unhappy drivers leaving any race at Bristol Motor Speedway, and the 2018 Food City 500 was no exception. Driver intro will take place at 12:40 p.m.
However, the forecast still calls for steady rain through Monday morning.
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