Derek Diamond
- Winter Plan adds him to the 40-man Nov 17; opens 2027 in the minors
This winter
What the Winter Plan does with Diamond: its decisions feed, the dated moves and the briefs
The plan adds him to the 40-man on Nov 17 to protect him from the Rule 5 draft; opens 2027 in the minors.
- Nov 17 Add Derek Diamond (SIRP, AAA) to the 40-manRule 5 protection.
Rule 5 pick risk 0.46 (the plan’s ordering, not a probability); expected loss if exposed 0.18 WAR.
- Rule 5 protectiondue Nov 17 · medium confidence
Protect Termarr Johnson (2B, AAA, FV 45), Derek Diamond (SIRP, AAA, FV 40) and Keiner Delgado (SS, AA, FV 40) by Nov 17. Expose the rest; the most likely to be taken is Cy Nielson (AAA, risk 0.23; expected loss 0.03 long-term WAR, below the 0.06 that cutting Noah Murdock for a fourth spot would cost; the plan's rule protects at most three).
Development · trends & plan
Tracked levels only. Monthly values; gaps mark the offseason. The number beside each line is its last month, with that month’s sample (faded under 50 PA or 150 pitches), not the season.
Trends · Triple-A
Triple-A tracking · 2026 percentiles
vs. 548 Triple-A pitchers (500+ pitches) · 677 tracked pitches · the share he beats, so higher is better (fewer walks)
Minor leagues
MLB Stats API · public box-score data
| SeasonLevel | Level | Team | Age | G | PA / IP | PA / IP ·Line |
|---|---|---|---|---|---|---|
| 2026A | A | Bradenton Marauders | 25 | 2 | 4 IP | 4 IP · 2.25 ERA · 29.4% K · 5.9% BB |
| 2026AA | AA | Altoona Curve | 25 | 5 | 10 IP | 10 IP · 0.00 ERA · 40.6% K · 0.0% BB |
| 2026AAA | AAA | Indianapolis Indians | 25 | 29 | 43 IP | 43 IP · 3.14 ERA · 21.8% K · 4.5% BB |
| 2026ROK | ROK | FCL Pirates | 25 | 1 | 1 IP | 1 IP · 0.00 ERA · 0.0% K · 0.0% BB |
| 2025A | A | Bradenton Marauders | 24 | 2 | 2.1 IP | 2.1 IP · 7.71 ERA · 8.3% K · 0.0% BB |
| 2025A+ | A+ | Greensboro Grasshoppers | 24 | 2 | 3 IP | 3 IP · 0.00 ERA · 70.0% K · 0.0% BB |
| 2025AA | AA | Altoona Curve | 24 | 9 | 14 IP | 14 IP · 14.79 ERA · 14.6% K · 12.2% BB |
Prospect Pipeline: Perf+ 112 over his 2026 season (232 BF, mostly AAA), 1.4 years younger than his level; trend +18.6 since 2025 (inside the year-to-year noise). Tag: Ready to push. MiLB Stuff 96 on 725 tracked AAA/A pitches. Prospects →
FanGraphs: FV 40 · ETA 2027. Public pitch tracking exists only at Triple-A and some Florida State League parks; where he has it, the development panel above shows it.