There are 30 stadiums across Major League Baseball. No two of them are the same.

Pro ballparks come in all shapes and sizes, sometimes due to the shape of the city block on which they were built, sometimes based on a team’s strengths (or weaknesses), and sometimes just to add character. Because their shapes differ, a home run hit in one park might not be a home run in another. For instance, a ball over the left field fence in Seattle might hit the Green Monster at Fenway, or a homer to deep center field at Dodger Stadium might not leave the park at Coors Field.

That’s what inspired us to create the No Doubter report. We define a “no doubt” home run as one that is hit hard enough, long enough, and high enough to leave any major league field. This season, there’s been home runs. Only of them were no doubters.

In this piece, the second in a series on the irregular outfields of baseball, we look at every home run hit this season to determine which can be called No Doubters. And in the process, we’ve crowned the top home run hitter of 2019.

2019 No Doubt Leaders

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No Doubters

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No Doubt Rate

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Seasonal No Doubt Rate data includes players with a minimum of 10 home runs. Monthly data includes home runs hit within one month of the most recent home run and includes players with a minimum of five. Weekly data includes home runs hit within one week of the most recent home run.

We used Statcast data, courtesy of MLB’s Baseball Savant, to get the trajectory for every home run hit in a season that was defined by them. We combine that with outfield measurements and fence heights for every park to calculate if each HR was a no doubter or not.

As of September 30th, Mike Trout is this year’s leader in no doubters with 16, just ahead of Jorge Soler. The Nationals’ Trea Turner, meanwhile, leads the league in no doubt rate. He may have hit only 19 home runs this season, but 10 of those would have left any MLB stadium.

The visualization below shows whether each of the season’s home runs were hit deep enough to clear the fence at a given major league ballpark.

Was That Home Run a No Doubter?

Search for a name, sort by a stat, or clicktap a homer
to see how it fared across MLB parks
MLB Stadiums

So who do we crown this season’s true home run king? Even though Pete Alonso set a rookie record on his way to a league-leading 53 home runs, less than 20% of them were no doubters. By contrast, Trout’s no doubt rate topped 35% for 2019.

Check out the full leaderboard below to find out for yourself, search for your favorite player, or sort by no doubt rate, exit velocity, or distance.

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or clicktap a player to see his home runs this season
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Sorting by No Doubt Rate, Average Exit Velocity, or Average Distance filters to only those players with at least 10 home runs this season, except when viewing postseason data.