Wallace & Gromit: Curse of the Home Run Derby?

Key Points:

• Analysis of Home Run Derby participants from 2022-2025 shows a general decline in second-half performance, including fewer home runs per plate appearance, lower slugging percentages, and decreased fly ball and home run-to-fly ball rates.
• The data suggests that the so-called "Home Run Derby Curse" may be more about selection bias, as participants tend to have unusually strong first halves and regress to their normal performance levels in the second half.
• Players with significant declines in fly ball rate, home run-to-fly ball rate, and pull percentage in the second half often had outlier first-half performances compared to their career norms, making these metrics useful for predicting regression.
• Among this year's derby participants, veterans Kyle Schwarber and Willson Contreras show outlier metrics but have track records suggesting they may maintain value, while younger first-timers like Munetaka Murakami and Jac Caglianone are prime candidates to sell high due to likely regression.
• Fantasy managers are advised to consider trading Murakami and Caglianone, especially in points leagues, while holding onto Jordan Walker and Ben Rice, who have demonstrated adaptability and may continue to perform well despite potential power regression.