Mark Martin's fuel mileage and Brad Keselowski's ill-timed flat tire on the last lap allowed Martin – NASCAR's all-time leader in Nationwide Series wins – to add another to his tally.
Martin won the Nationwide race at Las Vegas Motor Speedway on Saturday afternoon, with Justin Allgaier second and Keselowski third.
Danica Patrick was fourth, which marked the highest finish for a woman in NASCAR history.
Martin now has 49 career Nationwide victories – five ahead of Kyle Busch, who dominated early but crashed after his daring move took him into the grass.
Reed Sorenson remained the series points leader, by two over Ricky Stenhouse Jr. and five over Jason Leffler.
Here are the full results for the Sam's Town 300:
- Mark Martin
- Justin Allgaier
- Brad Keselowski
- Danica Patrick
- Trevor Bayne
- Carl Edwards
- Denny Hamlin
- Ricky Stenhouse Jr.
- Jason Leffler
- Kenny Wallace
- Reed Sorenson
- Elliott Sadler
- Michael Annett
- Brian Scott
- Aric Almirola
- Steve Wallace
- Mike Bliss
- Morgan Shepherd
- Ryan Truex
- Eric McClure
- Mike Wallace
- Robert Richardson Jr.
- Joe Nemchek
- Timmy Hill
- Derrike Cope
- Donnie Neuenberger
- Jeremy Clements
- Kevin Harvick
- Shelby Howard
- Kyle Busch
- Jennifer Jo Cobb
- Carl Long
- Scott Wimmer
- JJ Yeley
- Kelly Bires
- Brett Rowe
- Kevin Lepage
- Josh Wise
- Daryl Harr
- Charles Lewandoski
- Tim Andrews
- Jeff Green
- Kevin Conway