Regular-season careers from the StatVault encyclopedia — the same tables as each player's profile.
| Roberto Hernandez | Stat | Kenley Jansen |
|---|---|---|
| 17 | Seasons | 17 |
| 36.2 | Career VAL | 41.3 |
| 5.8 (1996) | Peak-season VAL | 5.7 (2017) |
| 2× | All-Star Selections | 3× |
| 0 | Black ink (league-leading seasons) | 0 |
| 4 | Gray ink (top-10 finishes) | 10 |
VAL is Value Above League — regular-season production measured against the league at the same position group (MLB VAL board). Black and gray ink count seasons from 1950 on.
| Roberto Hernandez | Stat | Kenley Jansen |
|---|---|---|
| Career | ||
| 1,010 | Games | 985 |
| Batting | ||
| 1 | Hits | 3 |
| 0 | RBI | 1 |
| 0 | Runs | 1 |
| 0 | Walks | 1 |
| .500 | Batting avg | .333 |
| .500 | ||
| On-base % |
|---|
| .400 |
| .500 | Slugging % | .444 |
|---|
| 175 | OPS+ | 113 |
|---|
| Pitching | ||
|---|---|---|
| 67 | Wins | 58 |
| 71 | Losses | 46 |
| 326 | Saves | 498 |
| 1071.1 | Innings pitched | 972.1 |
| 945 | Strikeouts (pitching) | 1,329 |
| 3.45 | ERA | 2.60 |
| 1.37 | WHIP | 0.97 |
| 129 | ERA+ | 156 |
| Age | Roberto Hernandez | Kenley Jansen |
|---|---|---|
| 23 | — | 1.6 |
| 24 | — | 2.7 |
| 25 | — | 3.8 |
| 26 | — | 1.9 |
| 27 | 4 | 2.6 |
| 28 | 4.3 | 5.2 |
| 29 | 1 | 5.7 |
| 30 | 0.8 | 2.6 |
| 31 | 5.8 | 3 |
| 32 | 3.8 | — |
| 33 | 1.7 | 3.6 |
| 34 | 4.2 | 1.7 |
| 35 | 3.1 | 1.2 |
| 36 | 1.3 | 2 |
| 37 | 1 | 2.6 |
| 38 | 0 | 1.1 |
| 39 | 0 | — |
| 40 | 3.1 | — |
| 41 | 2.1 | — |
| 42 | 0 | — |