And then he didn't.
After a chaotic finish was ruled final under caution, the Sunoco Rookie of the Year contender was initially named the Sparks Energy 300 victor before Elliott Sadler was told to bring his No. 1 Chevrolet to Victory Lane, several minutes after the checkered flag flew.
Before NASCAR came to that conclusion, however, the pair of drivers each patiently sat on opposite sides of the start/finish line at the 2.66-mile Alabama track, about to swap emotions.
"As I was waiting there, one, I was thinking hopefully the caution didn't come out as early as I think it came out and I'm hoping we race to the line but at the same time I'm thinking 'I hope NASCAR gets it right,' " Poole said in his post-race press conference. "I want the guy who deserves to win the race be the winner and go by the rules. And according to the rules, Elliott was the winner. I can't get mad about it. It just is what it is."
The finish was certainly among NASCAR's wildest -- both with the wreck that saw Joey Logano get airborne to spark the caution and with the period of time it took to make the final call. The minutes must have felt like an eternity to Poole and Sadler as the running order was sorted out.
NASCAR is certain it got it right.
"Took us a little time up in the tower. We feel 100 percent that we got it exactly right," said Wayne Auton, XFINITY Series managing director. "We used film, we used eyes. ... We took our time in the tower.
"I think all of you saw the 1 and the 48 come and sit at the start/finish line, which was pretty cool, to just have both drivers sit there really calm. ... We used every bit of film that we had; slow down, speed up -- we arrived at the finish we did and that's by using every piece of technology that we had to our availability."
Poole was lauded on social media and by the press for how he handled the situation, being told that he'd picked up his first career NASCAR win at any national level -- on a day which his sponsor, DC Solar, brought droves of people to the track -- only to have it swept out from under him. He had to settle for a third-place finish.
It was still a career-best showing for the promising 25-year-old, but moreso it was his post-race demeanor that people will come away remembering.
"I was just glad that they were able to take the time to get it right. Happy that the rightful winner has taken the trophy home tonight. I wish it was us, but we were close," said Poole, who now sits eighth in the points standings. "So, Elliott's the winner and it is what it is. It's racing.
"Any time you come up a little bit short, it kind of sucks. We've been fast for several weeks this year, we just haven't been able to close a whole race out and that's been tough.
"It's been an exciting last couple weeks and certainly this afternoon is one of the most exciting times in my racing career."