BB9

Jackson Kowar · Season-by-season history

BB9 over time

Jackson Kowar — BB9 over time Each point is a recorded season value. Separate lines show each team and competition. Exact values are listed in the table below. 0 1.28 2.56 3.84 5.12 6.4 2021 2022 2023 2025 2021 · Kansas City Royals · MLB: 5.9 2022 · Kansas City Royals · MLB: 6.3 2023 · Kansas City Royals · MLB: 6.4 2025 · Seattle Mariners · MLB: 3.7
  • Kansas City Royals · MLB
  • Seattle Mariners · MLB

Hover over a point for its value. Only numeric values with a recorded season are charted; missing seasons are not treated as zero.

Jackson Kowar — BB9 by season
SeasonTeamLeagueBB9
2025 Seattle Mariners MLB 3.7
2023 Kansas City Royals MLB 6.4
2022 Kansas City Royals MLB 6.3
2021 Kansas City Royals MLB 5.9