Joe Mack

Active

Miami Marlins · C

Age 236' 0" · 210 lbsBats Left

#432 Current

FBaseball Overview

The 23-year-old backstop enters his first full MLB season with modest early returns, posting a .250 batting average with 4 home runs and 19 RBI across limited action for Miami. While his power stroke shows promise for a young catcher, the lack of stolen base production and relatively low run totals reflect both his inexperience and the Marlins' offensive struggles. Fantasy managers should view Mack as a speculative bench catcher with upside potential rather than a lineup staple, as he develops at the position and gains more regular playing time in Miami's lineup. His value hinges on whether he can improve his batting average and drive in runs at a higher pace as he gains confidence against major league pitching.

MLB Hitting

Year	Team	G	PA	AB	AVG	HR	RBI	R	SB	K	OBP	SLG	OPS
2026	Miami Marlins	105	330	303	.234	14	52	40	0	82	.282	.403	.685
Career	Totals	105	330	303	.234	14	52	40	0	82	.282	.403	.685

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

Minor League Hitting

Year	Team	G	PA	AB	AVG	HR	RBI	R	SB	K	OBP	SLG	OPS
2021	FCL Marlins	19	75	53	.132	1	2	9	0	22	.373	.208	.581
2022	2 teams▼	44	183	148	.243	5	15	20	0	47	.383	.385	.768
2023	Beloit Sky Carp	120	503	449	.218	6	36	46	0	118	.295	.287	.582
2024	2 teams▼	125	535	472	.252	24	78	70	3	133	.338	.468	.806
2025	2 teams▼	112	468	408	.257	21	58	70	9	127	.338	.475	.813
2026	Jacksonville Jumbo Shrimp	24	103	82	.244	3	9	10	1	22	.388	.378	.766
Career	Totals	444	1867	1612	.239	60	198	225	13	469	.335	.399	.734

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

Last Week / Last Month

Current season · MLB only

7 games

G	PA	AB	AVG	HR	RBI	R	SB	K	OBP	SLG	OPS
7	21	20	.200	1	5	2	0	3	.238	.350	.588

30 games

G	PA	AB	AVG	HR	RBI	R	SB	K	OBP	SLG	OPS
30	92	87	.241	3	17	9	0	22	.261	.368	.629

Game Log2026 MLB

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Advanced Stats2026 season · via Baseball Savant

Click for year to year changes

EV Avg88.8 mph

Max EV109.3 mph

Launch Angle9.9°

Barrel %8.4%

K %24.8%

Hard Hit %38.3%

Sprint Speed26.1 ft/s

Bat Speed74.3 mph

Whiff %25.5%

Chase %28.1%

xBA0.225

xSLG0.396

xwOBA0.292

GB%50.2%

FB%24.7%

What These Stats Mean

EV Avg — Average exit velocity — how hard this batter hits the ball. Elite hitters (90+ mph) make consistently hard contact, driving better batting averages and more power.

Max EV — Peak exit velocity on the batter's hardest-hit ball this season. Signals raw power potential even without a high HR total yet.

Launch Angle — Average vertical angle of the ball off the bat. The sweet spot for extra-base hits is roughly 10–30°; extreme ground ball or pop-up hitters sit outside this range.

Barrel % — Percentage of batted balls hit with the optimal exit velocity + launch angle combo. Barrels are the single best predictor of home runs and slugging percentage.

K % — Strikeout rate per plate appearance. High K% suppresses batting average and limits run-scoring opportunities — lower is better for fantasy.

Hard Hit % — Percentage of batted balls hit 95 mph or harder. A broader power indicator than barrels; high hard-hit% players rack up extra-base hits and RBI.

Sprint Speed — Peak sprint speed in feet per second. The best predictor of stolen base upside and ability to leg out infield hits.

Bat Speed — Average swing speed at the point of contact. Faster bat speed lets hitters wait longer on pitches and generates more raw power potential.

Whiff % — Percentage of swings that miss. High whiff rates signal strikeout vulnerability, dragging down batting average and overall production.

Chase % — How often the batter swings at pitches outside the strike zone. Low chase rates mean elite plate discipline — more walks, fewer strikeouts, more consistent at-bats.

xBA — Expected batting average based on contact quality, stripping out luck and defensive positioning. Better predictor of future performance than actual batting average.

xSLG — Expected slugging based on batted ball data. A high xSLG relative to actual SLG suggests power suppressed by bad luck that's likely to bounce back.

xwOBA — Expected weighted on-base average — the most comprehensive single expected metric. Combines contact quality, walks, and strikeouts to project overall offensive production.

GB% — Ground ball rate. High GB% hitters trade home run power for speed-dependent value — good for stolen base upside, but a drag on HR and SLG categories.

FB% — Fly ball rate. Elite power hitters combine high FB% with high exit velocity. High fly ball rate + soft contact = home run or nothing type.

Loading player data...

Year

Team

AVG

RBI

OBP

SLG

OPS

2026

Miami Marlins

105

330

303

.234

.282

.403

.685

Career

Totals

105

330

303

.234

.282

.403

.685

Year

Team

AVG

RBI

OBP

SLG

OPS

2021

FCL Marlins

.132

.373

.208

.581

2022

2 teams▼

183

148

.243

.383

.385

.768

2023

Beloit Sky Carp

120

503

449

.218

118

.295

.287

.582

2024

2 teams▼

125

535

472

.252

133

.338

.468

.806

2025

2 teams▼

112

468

408

.257

127

.338

.475

.813

2026

Jacksonville Jumbo Shrimp

103

.244

.388

.378

.766

Career

Totals

444

1867

1612

.239

198

225

469

.335

.399

.734

AVG

RBI

OBP

SLG

OPS

.200

.238

.350

.588

AVG

RBI

OBP

SLG

OPS

.241

.261

.368

.629