When fiddling with some statistics of pitchers across baseball history, I accidentally noticed that Mariano Rivera ranks incredibly high on many critical stats. I had expected pitchers from the dead-ball era to dominate this list - and they did, with the exception of the Sandman.
This involved all pitchers who pitched at least 1000 innings since 1901, the beginning of the modern era of major league baseball. What I was looking for were indicators of pitchers who were nasty to hit against, be it due to stuff or deceptive motion or a trick pitch, and thus postulated that such pitchers might rank well in stats that measure the following:
- HRs allowed
- Hits allowed
- Runs allows
- Strikeouts
- Walks - which I included because if a pitcher is always walking men on base and getting into hitters' counts, his nastiness is limited by his inability to command.
Since this study involved walks and strikeouts, I excluded seasons earlier than 1901, because prior to 1901 the rules that defined what constituted strikeouts and walks were different.
I ranked the pitchers by these stats, and that is when I noticed Mariano kept appearing at the top. So for these stats, I averaged each pitcher's ranks in the categories, then ranked these averages. The following table shows the pitchers who ranked in the top 10:
| Pitcher | Hits/9 | ERA | HR/9 | BB/9 | K/9 | Avg. of All Ranks | Overall Rank |
| Waddell, Rube | 31 | 6 | 28 | 227 | 79 | 74.2 | 1 |
| Rivera, Mariano | 6 | 10 | 264 | 72 | 26 | 75.6 | 2 |
| Walsh, Ed | 12 | 1 | 6 | 40 | 405 | 92.8 | 3 |
| Wood, Joe | 13 | 4 | 5 | 313 | 203 | 107.6 | 4 |
| Johnson, Walter | 35 | 9 | 72 | 83 | 386 | 117.0 | 5 |
| Bender, Chief | 90 | 30 | 45 | 94 | 447 | 141.2 | 6 |
| Mathewson, Christy | 101 | 7 | 89 | 9 | 543 | 149.8 | 7 |
| Young, Cy | 83 | 8 | 46 | 1 | 647 | 157.0 | 8 |
| Plank, Eddie | 100 | 19 | 11 | 101 | 592 | 164.6 | 9 |
| Joss, Addie | 23 | 2 | 7 | 5 | 797 | 166.8 | 10 |
If it is not clear, the way to read the table is as follows:
- The 2nd through 5th columns list the pitchers' ranks in particular stats. For example, Mariano ranks 6th in H/9, 10th in ERA, etc.
- The 6th column ranks the pitchers' average ranks. Mariano is 2nd.
Mariano is the only non-dead-ball era pitcher who makes the top 10, and he even outranks most of them. Later on this post will compare Mariano with only pitchers in the live ball era. But first, let's let's discuss the particular stats used and any considerations that provide context.