Jhonathan Díaz
Jhonathan Díaz is a 30-year-old relief pitcher for the Seattle Mariners. He is a precision relief pitcher, ranked 260th in the league at the role.
About these ratings
Tool ratings combine recorded performance with statistical estimates. Speed, arm, and fielding include outcome-based estimates rather than direct physical measurements.
Some tools are unavailable. MD means missing data; unavailable tools are left out of the graph, not scored as zero.
Limited MLB evidence: 5.1% MLB and 94.9% level-adjusted minor-league estimate.
Minor-league estimate: 66.7% observed statistical weight and 33.3% historical peer baseline; individual tools use their own sample weights.
* On NTV, this indicates estimated or unverified inputs. CE uses an asterisk only when current contract information is unavailable.
CE uses the best available contract information, including partial terms, estimated salaries, and projected team control. CE shows an asterisk only when current contract information is unavailable; free agents without a current agreement use 100*.
2026 win contribution
0.00 Player Wins · 0.03 expected from replacement · -0.03 wins above replacement
Includes contributions to every team played for in 2026. Perf expresses wins above replacement on a scale where 100 is average. How the win totals reconcile
Six-tool graphs show percentiles from available performance evidence. Speed uses baserunning outcomes; Arm uses position-adjusted throwing outcomes. Movement describes tracked pitch movement within pitch type. Minor-league comparisons account for competition level; unavailable measurements display MD.
Edge Profile
Edge combines Perf, Stick, and Carry to show how valuable a player is right now. With a Perf of 86, Stick of 95, and Carry of 90, Jhonathan Díaz sits in the 45th percentile, 46th percentile, and 44th percentile in those areas. His 77 Edge lands in the 38th percentile and ranks 299th among relief pitchers.
Stick Profile
Stick looks beyond the immediate results and estimates what should hold over a larger sample. Jhonathan Díaz's 95 Stick suggests he is performing below what his underlying profile supports. It also places him in the 46th percentile and ranks 399th among relief pitchers.
Perf Profile
Perf measures season wins above replacement after allocating each team's actual wins to its players. It includes Jhonathan Díaz's contributions to every team he played for. His 86 Perf is below average on a scale where 100 is average and 20 points is one standard deviation. It sits in the 45th percentile and ranks 282nd among relief pitchers.
Carry Profile
Carry places Perf in the context of the roster around a player and includes a bounded clutch adjustment for offense, pitching, and defense when available. Close games and later innings earn more weight, and difficult defensive plays receive their own credit. His clutch runs are offense +0.0, pitching -0.1, defense +0.0. The strongest rated teammates are Randy Arozarena at 142, Bryan Woo at 130, and Cole Young at 109. Jhonathan Díaz has contributed about as much as his own Perf suggests, resulting in a Carry of 90.
LI Profile
LI looks at how much useful baseball a player may still have ahead of him. At age 30, Jhonathan Díaz carries a 97 LI, which points to a steady near-term outlook without a major longevity advantage. That places him in the 3rd percentile and ranks 3223rd among relief pitchers.
CE Profile
CE compares expected production with the money and years attached to a contract. The model uses a one season control horizon, $0.8 million average annual value, and about $0.8 million in contract-scenario costs for Jhonathan Díaz. Options and arbitration can make those years or costs conditional; manual contract inputs may lag new agreements. His 100 CE is close to a fair exchange between salary and production, placing him in the 11th percentile and 3081st among relief pitchers.
NTV Profile
NTV estimates Jhonathan Díaz's value on a neutral trade market before the needs of a specific club are considered. His +14* NTV reflects his present ability, expected future value, age, contract, control, positional demand, and risk. That mark sits in the 80th percentile and ranks 260th among relief pitchers. Jhonathan Díaz carries clear positive value and should return a useful major league piece or prospect package.