Whiff% rates have been talked about more and more since the birth of Statcast. Today we’ll go over which players had the highest Whiff% rates, and which players made the most amount of contact during the final month of last season.
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Highest and Lowest Whiff% in September 2019
One of our missions when we launched back in October was that we wanted to make analytics more accessible to fans of the game. Sure, the data that’s collected by MLB and MLB Advanced Media is publicly available, and can be found on Baseball Savant. But we want to make things easier for fans, and want to make sure that you can see which players are trending up and down much easier.
This is will be just the first article of this kind on our site, so expect more of these once the MLB season begins in late March. With that said, let’s go over which players had the highest Whiff% rates during the final month of 2019.
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Top 10 Highest Whiff% Rates in September
In case you’re not sure how Whiff% rate is calculated, here’s how we calculate it:
(# of times fails to make contact when swinging (i.e. swinging strike, missed bunt, foul tip, etc.)/(Total # of swings)*
NOTE: In order to qualify for our list, a player must have made at least 100 swing/bunt attempts
| # | Team | Player | Whiff% |
| 1 | Royals | Adalberto Mondesi | 46.8% |
| 2 | Tigers | Ronny Rodriguez | 45.7% |
| 3 | Yankees | Aaron Judge | 44.5% |
| 4 | Twins | Miguel Sano | 44.3% |
| 5 | Red Sox | Marco Hernandez | 43.3% |
| 6 | Angels | Kole Calhoun | 41.9% |
| 7 | Reds | Aristides Aquino | 40.4% |
| 8 | Mariners | Kyle Lewis | 39.0% |
| 9 | White Sox | Daniel Palka | 37.6% |
| 10 | Brewers | Eric Thames | 36.1% |
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Top 10 Lowest Whiff% Rates in September
| # | Team | Player | Whiff% |
| 1 | Twins | Luis Arraez | 4.6% |
| 2 | Astros | Michael Brantley | 9.2% |
| 3 | Angels | David Fletcher | 9.4% |
| 4 | Angels | Andrelton Simmons | 9.9% |
| 5 | Nationals | Anthony Rendon | 11.8% |
| 6 | Cubs | Ben Zobrist | 12.1% |
| 7 | Pirates | Kevin Newman | 12.1% |
| 8 | Rays | Austin Meadows | 12.1% |
| 9 | Diamondbacks | Wilmer Flores | 12.4% |
| 10 | Nationals | Howie Kendrick | 12.6% |
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*-We quantify Whiff% a bit differently than Baseball Savant. We take bunts into account when calculating Whiff%
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