Jack Aker played in Major League Baseball from 1964 to 1974, appearing in 495 games over 11 seasons. He recorded a total of 47 W and 45 L, an ERA of 3.28, 404 SO, a WHIP of 1.277, and a WAR of 8.6.
🧾 Basic Profile
 | |
| Name | Jack Aker |
| Date of Birth | July 13, 1940 |
| Nationality |  United States |
| Position | Pitcher |
| Throws | Right |
| Bats | Right |
| MLB Debut | 1964 |
Jack Aker Yearly Pitching Stats
This chart shows the season-by-season changes in ERA, SO, and IP for Jack Aker.
Parsing Data
Data Source: Baseball Reference
Image Source: Wikipedia
📊 Career Summary
Jack Aker appeared in 495 games over 11 MLB seasons from 1964 to 1974. Below are his cumulative stats and MLB all-time rankings:
| GS | 0 (MLB Rank: 8,004) |
| GF | 321 (MLB Rank: 104) |
| W | 47 (MLB Rank: 1,545) |
| L | 45 (MLB Rank: 1,737) |
| SV | 124 (MLB Rank: 128) |
| ERA | 3.28 (MLB Rank: 1,942) |
| IP | 746 (MLB Rank: 1,781) |
| SO | 404 (MLB Rank: 1,965) |
| BB | 274 (MLB Rank: 1,790) |
| H | 679 (MLB Rank: 1,941) |
| HR | 63 (MLB Rank: 1,645) |
| SO9 | 4.87 (MLB Rank: 5,825) |
| BB9 | 3.31 (MLB Rank: 7,480) |
| H9 | 8.19 (MLB Rank: 9,579) |
| HR9 | 0.76 (MLB Rank: 5,848) |
| WHIP | 1.277 (MLB Rank: 9,803) |
| WAR | 8.6 (MLB Rank: 1,431) |
📊 Last Season Summary (1974)
In his final season (1974), Jack Aker recorded the following stats:
| GS | 0 |
| GF | 24 |
| W | 2 |
| L | 2 |
| SV | 2 |
| ERA | 3.57 |
| IP | 58 |
| SO | 25 |
| BB | 23 |
| H | 50 |
| HR | 7 |
| SO9 | 3.88 |
| BB9 | 3.57 |
| H9 | 7.76 |
| HR9 | 1.09 |
| WHIP | 1.259 |
| WAR | 0.1 |
📈 Seasonal Highlights
- Most Wins: 1966, 8 W
- Most SO: 1966, 68 SO
- Most IP: 1966, 113 IP
- Best WAR: 1966, 4.6 WAR
- Best ERA: 1966, 1.99 ERA
🎯 Postseason Performance
Jack Aker has no postseason appearances.
Jack Aker Career Pitching Stats Overview
| season | W | L | ERA | W-L% | SV | SO | IP | WAR | WHIP | HR | H | BB | R | ER | ERA+ | FIP | SO9 | SO/BB | GS | G | GF | CG | SHO | HR9 | H9 | BB9 | BK | HBP | IBB | WP | BF |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1964 | 0 | 1 | 8.82 | 0 | 0 | 7 | 16.1 | -0.9 | 1.653 | 6 | 17 | 10 | 18 | 16 | 45 | 9.46 | 3.9 | 0.7 | 0 | 9 | 1 | 0 | 0 | 3.3 | 9.4 | 5.5 | 0 | 6 | 1 | 0 | 80 |
1965 | 4 | 3 | 3.16 | 0.571 | 3 | 26 | 51.1 | 1.1 | 1.227 | 3 | 45 | 18 | 18 | 18 | 112 | 3.49 | 4.6 | 1.44 | 0 | 34 | 14 | 0 | 0 | 0.5 | 7.9 | 3.2 | 0 | 3 | 6 | 1 | 210 |
1966 | 8 | 4 | 1.99 | 0.667 | 32 | 68 | 113 | 4.6 | 0.965 | 6 | 81 | 28 | 27 | 25 | 171 | 2.86 | 5.4 | 2.43 | 0 | 66 | 57 | 0 | 0 | 0.5 | 6.5 | 2.2 | 0 | 3 | 10 | 0 | 442 |
1967 | 3 | 8 | 4.3 | 0.273 | 12 | 65 | 88 | -0.3 | 1.352 | 9 | 87 | 32 | 44 | 42 | 75 | 3.58 | 6.6 | 2.03 | 0 | 57 | 40 | 0 | 0 | 0.9 | 8.9 | 3.3 | 0 | 3 | 8 | 1 | 373 |
1968 | 4 | 4 | 4.1 | 0.5 | 12 | 44 | 74.2 | -1.4 | 1.406 | 6 | 72 | 33 | 39 | 34 | 68 | 3.82 | 5.3 | 1.33 | 0 | 54 | 30 | 0 | 0 | 0.7 | 8.7 | 4 | 0 | 6 | 6 | 4 | 330 |
1969 | 8 | 6 | 3.17 | 0.571 | 14 | 47 | 82.1 | 1.5 | 1.348 | 8 | 76 | 35 | 32 | 29 | 112 | 4.09 | 5.1 | 1.34 | 0 | 53 | 32 | 0 | 0 | 0.9 | 8.3 | 3.8 | 0 | 5 | 9 | 0 | 348 |
1970 | 4 | 2 | 2.06 | 0.667 | 16 | 36 | 70 | 2.4 | 1.1 | 3 | 57 | 20 | 19 | 16 | 173 | 3.2 | 4.6 | 1.8 | 0 | 41 | 28 | 0 | 0 | 0.4 | 7.3 | 2.6 | 0 | 4 | 5 | 1 | 284 |
1971 | 4 | 4 | 2.59 | 0.5 | 4 | 24 | 55.2 | 0.9 | 1.329 | 3 | 48 | 26 | 20 | 16 | 127 | 3.69 | 3.9 | 0.92 | 0 | 41 | 20 | 0 | 0 | 0.5 | 7.8 | 4.2 | 0 | 0 | 9 | 3 | 237 |
1972 | 6 | 6 | 2.96 | 0.5 | 17 | 37 | 73 | 0.3 | 1.315 | 4 | 70 | 26 | 33 | 24 | 126 | 3.41 | 4.6 | 1.42 | 0 | 52 | 43 | 0 | 0 | 0.5 | 8.6 | 3.2 | 0 | 6 | 5 | 2 | 315 |
1973 | 4 | 5 | 4.1 | 0.444 | 12 | 25 | 63.2 | 0.3 | 1.555 | 8 | 76 | 23 | 33 | 29 | 96 | 4.59 | 3.5 | 1.09 | 0 | 47 | 32 | 0 | 0 | 1.1 | 10.7 | 3.3 | 0 | 2 | 6 | 0 | 281 |
1974 | 2 | 2 | 3.57 | 0.5 | 2 | 25 | 58 | 0.1 | 1.259 | 7 | 50 | 23 | 29 | 23 | 104 | 4.58 | 3.9 | 1.09 | 0 | 41 | 24 | 0 | 0 | 1.1 | 7.8 | 3.6 | 0 | 2 | 3 | 1 | 244 |
