How Jack Aker's Strikeouts Per 9 Innings Compares to Similar Players
Jack Aker posted a career Strikeouts Per 9 Innings of 4.87, well below the relief pitcher average of 6.36 — production that significantly underperformed against league baselines. His best Strikeouts Per 9 Innings season came in 1967, posting 6.65, above the relief pitcher average of 5.96 that year. The lowest point came in 1973 at 3.53, well below the relief pitcher average of 5.36 that year. Production slipped through the final seasons. The figure moved from 4.56 in 1972 to 3.53 in 1973 and 3.88 in 1974. The decline marked the closing chapter of the career. Some season-to-season variance runs through the career line, but the career average remained well below league norms across 11 seasons.
Jack Aker Lifetime Strikeouts Per 9 Innings
Stats similar to Strikeouts Per 9 Innings for Jack Aker
| Jack Aker
Strikeouts Per 9 Innings |
|---|
| Career | 4.87 |
| Season Avg. | 4.87 |
| 162 Game Avg. | 4.87 |
| More Info | See More |
Jack Aker Strikeouts Per 9 Innings Per Season
Jack Aker's Strikeouts Per 9 Innings for each season of his MLB career, plotted against that year's league average. Switch between comparisons — American League, Hall of Fame, RP, North America, or players born in the same country — to see how he stacked up year by year.
Jack Aker Strikeouts Per 9 Innings by Team
Jack Aker's career Strikeouts Per 9 Innings totals broken down by each team he played for, ordered by when he first joined that team.
Jack Aker Strikeouts Per 9 Innings Year-Over-Year Change
A waterfall chart tracking how Jack Aker's career Strikeouts Per 9 Innings shifted from season to season. Each bar represents the change added to his career total that year, making peak and decline phases easy to spot.
Jack Aker Strikeouts Per 9 Innings Distribution vs. Comparable Players
Each box summarizes Jack Aker's seasonal Strikeouts Per 9 Innings alongside a selected comparison group across all seasons he played. The box covers the middle 50% of seasons, the center line is the median, and the whiskers extend to the min and max. A tighter box means more consistency; a higher median means more output. Use the selector to switch comparison groups.
Jack Aker Strikeouts Per 9 Innings — Season-by-Season Breakdown
Every season of Jack Aker's MLB career with Strikeouts Per 9 Innings alongside league, Hall of Fame, positional, birth region, and country-of-birth averages for that year. Career totals include sum, average, min, max, and median.
Note: A dash (—) means no qualifying players existed in that comparison group for that season. Most commonly this happens for the Hall of Fame group.
