If not for one rainy day on Long Island in the spring of 2009, there is a good chance Mike Trout would have ended up with the Arizona Diamondbacks.

The latest episode of MLB’s new podcast “Full Account” details the story of how Trout, now widely considered the best player in baseball, lasted until pick No. 25 of the 2009 draft.

A full decade removed, there are now 21 teams lamenting their failure to select Trout. Many teams will tell you how close they were to taking Trout, but perhaps none was in better position to do so than the Diamondbacks.

Tom Allison, who was the Diamondbacks’ scouting director in 2009, explained that he had planned to select a high-upside prep player and a college player with back-to-back picks at Nos. 16 and 17 in the first round.

Allison had apparently seen Trout once in the spring of his senior season at Millville (N.J.) High and was impressed. Through a number of different sources, the Diamondbacks likely knew Trout as well as any team. They seemed ready to pounce.

But that’s when Mother Nature intervened.

Allison was planning to see a young lefty named Steven Matz pitch on Long Island, but he got word from an area scout that the game had been rained out. Allison decided to head back to Millville to get another look at Trout.

But, as Allison explained on the podcast, Trout had a bad game. Suddenly, all the doubts many industry minds had regarding Trout began to seep into Allison’s mind: Growing up in a cold-weather state; inability to repeat some mechanics; a father who flamed out in the minors.

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Allison said on the podcast that a fundamental scouting rule is “once you’ve seen a guy, you weigh in, (and) never go back…

“Well, sure enough, I went back.”

Allison, who is now the vice president of scouting for the Seattle Mariners, said Trout was “a little bit more raw” and “just a little bit further behind some of the other players that had more reps under their belts.”

As expected, the Diamondbacks dipped into the college ranks with the second of their consecutive picks in the first round. They took an outfielder from Notre Dame named A.J. Pollock at No. 17 overall.

But with the 16th pick, the pick Allison had designed for a high-schooler with upside, the Diamondbacks went with a player named Bobby Borchering from Fort Myers, Fla.

Borchering never made it past Double-A and has been out of baseball since 2015. Meanwhile, Trout is a two-time MVP and seven-time All-Star.

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However, Allison and the Diamondbacks recovered nicely in the eighth round when they nabbed a first baseman named Paul Goldschmidt at No. 246 overall, which is regarded as one of the best late-value picks in draft history.

Imagining a draft haul of Trout, Pollock and Goldschmidt seems inconceivable — but it very nearly came to fruition.

Had Matz’s start not been rained out on Long Island, and Trout not had a bad day in Millville, the last decade could have played out quite differently for the Diamondbacks.

Richard Morin covers the Coyotes and Diamondbacks for azcentral sports. He can be reached at [email protected]. Follow him on Twitter @ramorin_azc. Subscribe to azcentral today.