Reiver Sanmartin

Active

San Francisco Giants · RP

Age 306' 1" · 188 lbsThrows Left

#702 Current

FBaseball Overview

At 30 years old, Sanmartin continues to operate as a depth arm in the Sacramento organization with minimal MLB opportunity over the past two seasons. His 2026 campaign shows limited early promise, with an 8.10 ERA and 1.50 WHIP across just 3.1 innings, suggesting he remains a fringe option unlikely to accumulate meaningful wins or saves. The lack of strikeout production—only four K's in early action—further limits his fantasy upside, as does his continued reliance on minor league time. Fantasy managers should pass on Sanmartin as a 2026 option, as his modest track record and inability to secure consistent MLB innings make him better suited for deep league benches rather than active rosters.

MLB Pitching

Year	Team	G	GS	W	L	ERA	WHIP	K	IP	BB
2021	Cincinnati Reds	2	2	2	0	1.54	1.20	11	11.2	2
2022	Cincinnati Reds	45	4	4	4	6.32	1.67	47	57.0	29
2023	Cincinnati Reds	14	0	1	0	7.07	1.93	13	14.0	10
2025	Cincinnati Reds	1	0	0	0	0.00	1.80	2	1.2	1
2026	San Francisco Giants	24	0	3	0	4.22	1.36	16	21.1	7
Career	Totals	86	6	10	4	5.37	1.59	89	105.2	49

Source: MLB Stats API · Multi-team seasons show combined totals — click to expand

Minor League Pitching

Year	Team	G	GS	W	L	SV	ERA	WHIP	K	IP	BB
2015	DSL Rangers 1	6	0	0	1	0	5.23	2.03	7	10.1	9
2016	2 teams▼	12	12	7	1	0	2.35	1.09	56	61.1	6
2017	2 teams▼	14	11	7	2	0	2.45	1.26	56	66	9
2018	4 teams▼	13	10	5	7	1	2.81	1.02	58	67.1	4
2019	2 teams▼	25	25	4	12	0	4.05	1.31	114	122.1	31
2021	2 teams▼	25	17	10	2	0	3.32	1.16	112	100.1	28
2022	Louisville Bats	7	2	2	2	0	7.36	1.53	26	18.1	4
2024	3 teams▼	21	2	0	2	0	6.33	1.55	19	21.1	7
2025	Louisville Bats	46	2	7	2	0	2.67	1.23	55	67.1	18
2026	2 teams▼	21	1	4	2	0	3.03	0.94	28	29.2	4
Career	Totals	190	82	46	33	1	3.40	1.22	531	564.1	120

Source: MLB Stats API · Multi-team seasons show combined totals — click to expand

Last Week / Last Month

Current season · MLB only

7 games

G	GS	IP	W-L	SV	ERA	WHIP	K	BB
7	0	4.1	1-0	0	4.15	1.62	2	2

30 games

G	GS	IP	W-L	SV	ERA	WHIP	K	BB
24	0	21.1	3-0	0	4.22	1.36	16	7

Game Log2026 MLB

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Advanced Stats2026 season · via Baseball Savant

Click for year to year changes

FB Velo91.8 mph

Avg Spin2345 rpm

Whiff %22.4%

K %17.2%

BB %7.5%

Hard Hit %37.1%

Barrel %10.0%

xERA4.03

xBA Against0.261

xSLG Against0.396

BA Against0.259

SLG Against0.435

What These Stats Mean

FB Velo — Average fastball velocity. Harder throwers generate more swings and misses, setting up every other pitch in their arsenal. Velocity is the foundation of strikeout upside.

Avg Spin — Average spin rate across all pitches. Higher spin creates more movement and makes pitches harder to square up — elite spinners run better strikeout and batting average against numbers.

Whiff % — Swings-and-misses per swing. The most direct measure of a pitcher's ability to miss bats and the best leading indicator of strikeout rate.

K % — Strikeout rate per batter faced. The core fantasy pitching stat — high K% means reliable strikeout totals that hold up even in shorter starts.

BB % — Walk rate per batter faced. The primary control metric. High BB% tanks ERA and WHIP and keeps baserunners on constantly. Elite starters typically run below 7%.

Hard Hit % — Percentage of batted balls hit 95 mph or harder against. Low hard-hit% means weak contact, protecting both ERA and the defense behind the pitcher.

Barrel % — Percentage of batted balls barreled against. The most direct home run predictor — low barrel% pitchers rarely give up long balls.

xERA — Expected ERA based on contact quality allowed, removing the effect of sequencing, luck, and defense. Better predictor of future ERA than ERA itself.

xBA Against — Expected batting average opponents should hit based on contact quality. A gap between xBA and actual BA indicates unsustainable luck in either direction.

xSLG Against — Expected slugging allowed based on contact quality. High xSLG against predicts future extra-base damage; low xSLG means the pitcher is genuinely suppressing power.

BA Against — Actual batting average opponents are hitting — a key WHIP component. Check xBA to see if the number is sustainable.

SLG Against — Actual slugging allowed. Captures hits, doubles, triples, and home runs — lower means the pitcher is limiting the power damage he gives up.

GB% — Ground ball rate. High GB% pitchers generate double plays, limit home runs, and keep the ball in the park — great for protecting ERA and WHIP ratios.

FB% — Fly ball rate. High FB% pitchers give up more air contact — dangerous when combined with high exit velocity, less so when contact is soft.

Loading player data...

Year

Team

ERA

WHIP

2021

Cincinnati Reds

1.54

1.20

11.2

2022

Cincinnati Reds

6.32

1.67

57.0

2023

Cincinnati Reds

7.07

1.93

14.0

2025

Cincinnati Reds

0.00

1.80

1.2

2026

San Francisco Giants

4.22

1.36

21.1

Career

Totals

5.37

1.59

105.2

Year

Team

ERA

WHIP

2015

DSL Rangers 1

5.23

2.03

10.1

2016

2 teams▼

2.35

1.09

61.1

2017

2 teams▼

2.45

1.26

2018

4 teams▼

2.81

1.02

67.1

2019

2 teams▼

4.05

1.31

114

122.1

2021

2 teams▼

3.32

1.16

112

100.1

2022

Louisville Bats

7.36

1.53

18.1

2024

3 teams▼

6.33

1.55

21.1

2025

Louisville Bats

2.67

1.23

67.1

2026

2 teams▼

3.03

0.94

29.2

Career

Totals

190

3.40

1.22

531

564.1

120

W-L

ERA

WHIP

4.1

1-0

4.15

1.62

W-L

ERA

WHIP

21.1

3-0

4.22

1.36