What years did Mack Stewart play?

Mack Stewart played in Major League Baseball from 1944 to 1945.

Was Mack Stewart a pitcher?

Yes. Mack Stewart pitched in the major leagues, recording 0 wins and 12 strikeouts.

How many home runs did Mack Stewart hit?

Mack Stewart hit 0 career home runs with 1 hit.

What teams did Mack Stewart play for?

Mack Stewart played for one team, the Chicago Cubs (1944–1945).

What were Mack Stewart's career stats?

In 24 games, Mack Stewart went 0-1 with a 3.76 ERA, 12 strikeouts, and 40.2 innings pitched.

What position did Mack Stewart play?

Mack Stewart played primarily as a pitcher, the position where he appeared in the most games.

How tall was Mack Stewart and how much did he weigh?

Mack Stewart was listed at 6 feet and 167 pounds.

What was Mack Stewart's career ERA?

Mack Stewart finished with a 3.76 career ERA, going 0-1 with 12 strikeouts.

How many strikeouts did Mack Stewart have?

Mack Stewart recorded 12 career strikeouts.

Is Mack Stewart in the Hall of Fame?

No. Mack Stewart has not been inducted into the National Baseball Hall of Fame.

Mack Stewart

Pitcher · Career Stats, Bio & Records (1944-1945)

Mack Stewart was a pitcher who played in Major League Baseball from 1944 to 1945 for the Chicago Cubs, a span of 2 seasons. Across 24 career appearances, he went 0-1 with a 3.76 ERA and 12 strikeouts.

W (Wins):: Games credited to a pitcher whose team took a lead it never surrendered while he was the pitcher of record.
ERA (Earned Run Average):: Earned runs allowed per nine innings pitched: (ER × 9) ÷ IP. The primary measure of pitching effectiveness.
SO (Strikeouts):: For a batter, times retired on a third strike; for a pitcher, batters retired on a third strike.
WHIP (Walks and Hits per Inning Pitched):: Baserunners allowed per inning: (BB + H) ÷ IP. Under 1.00 is elite.

Data updated October 17, 2026

W–L 0–1

ERA 3.76

WHIP 1.62

SO 12

Pitcher PIV -125.4

Position: Pitcher
Bats / Throws: R / R
Height / Weight: 6'0" / 167 lb
Born: 9/23/1914 in Stevenson, AL, USA
Died: 3/21/1960 in Macon, GA, USA
MLB Debut: 1944-07-07
Last Game: 1945-06-22

Full name: William Macklin Stewart

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Career Pitching Statistics

Mack Stewart — Career Pitching Statistics
W	L	G	GS	CG	SHO	SV	IP	H	ER	HR	BB	SO	ERA	Pitcher PIV
0	1	24	1	0	0	0	40.2	48	17	1	18	12	3.76	-125.4

Career ERA 3.76 vs. league average 3.62 across their career seasons — near league average.

Season-by-Season Pitching

Pitching Career Arc

Click a stat to plot it across every season.

Mack Stewart — Season-by-Season Pitching
Year	Team	Lg	L	G	GS	IP	H	ER	BB	SO	ERA	Lg ERA	Pitcher PIV
1944	CHN	NL	0	8	0	12.1	11	2	4	3	1.46	3.57 (+59%)	-198.6
1945	CHN	NL	1	16	1	28.1	37	15	14	9	4.76	3.67 (-30%)	73.2
Career · 2 seasons			1	24	1	40.2	48	17	18	12	3.76	—	-125

Lg columns show the league average for that season, with the player's figure as a percentage above or below it. Career totals the seasons listed above.

Career Batting Statistics

Mack Stewart — Career Batting Statistics
G	AB	R	H	2B	3B	HR	RBI	SB	BB	SO	AVG	OBP	SLG	OPS	PIV
24	4	0	1	0	0	0	0	0	0	2	.250	.250	.250	.500	0

Career AVG .250 vs. league average .261 across their career seasons — near league average.

Career OBP .250 vs. league average .327 across their career seasons — 23.6% below league average.

Career SLG .250 vs. league average .356 across their career seasons — 29.8% below league average.

Career OPS .500 vs. league average .684 across their career seasons — 26.9% below league average.

Season-by-Season Batting

Career Arc

Click a stat to plot it across every season.

Mack Stewart — Season-by-Season Batting
Year	Team	Lg	G	AB	H	SO	AVG	Lg AVG	Lg OBP	Lg SLG	Lg OPS	PIV
1944	CHN	NL	8	1	0	1	.000	—	—	—	—	0.0
1945	CHN	NL	16	3	1	1	.333	—	—	—	—	0.0
Career · 2 seasons			24	4	1	2	.250	—	—	—	—	0

Lg columns show the league average for that season, with the player's figure as a percentage above or below it. Career totals the seasons listed above.

Game Log & Splits

View full game log (48 games) →

Per-game data from Retrosheet (regular season, through 2025).

Batting — Home / Away

Mack Stewart — Batting — Home / Away
Split	G	AB	R	H	HR	RBI	AVG
Home	12	4	0	1	0	0	.250
Away	12	0	0	0	0	0	—

Pitching — Home / Away

Mack Stewart — Pitching — Home / Away
Split	G	IP	H	ER	BB	SO	ERA
Home	12	24.1	29	10	11	9	3.70
Away	12	16.1	19	7	8	4	3.86

Last 10 Games — Batting

Mack Stewart — Last 10 Games — Batting
Date	Tm	Opp	Res	AB	H	SO
1945-06-22	CHC	STL	L	0	0	0
1945-06-14	CHC	PIT	L	0	0	0
1945-06-12	CHC	PIT	L	0	0	0
1945-06-10	CHC	CIN	W	3	1	1
1945-06-07	CHC	STL	L	0	0	0
1945-06-03	CHC	BSN	L	0	0	0
1945-05-29	CHC	BRO	L	0	0	0
1945-05-24	CHC	PHI	L	0	0	0
1945-05-17	CHC	NY1	L	0	0	0
1945-05-16	CHC	NY1	L	0	0	0

Last 10 Games — Pitching

Mack Stewart — Last 10 Games — Pitching
Date	Tm	Opp	Dec	IP	H	R	ER	BB	SO
1945-06-22	CHC	STL	—	0.1	1	0	0	0	0
1945-06-14	CHC	PIT	—	1.0	2	0	0	0	0
1945-06-12	CHC	PIT	—	0.2	0	0	0	0	0
1945-06-10	CHC	CIN	—	6.1	9	5	5	2	3
1945-06-07	CHC	STL	—	2.0	1	1	1	1	0
1945-06-03	CHC	BSN	—	1.0	0	0	0	0	1
1945-05-29	CHC	BRO	L	2.1	7	6	5	3	1
1945-05-24	CHC	PHI	—	2.2	1	0	0	2	0
1945-05-17	CHC	NY1	—	0.1	2	0	0	0	0
1945-05-16	CHC	NY1	—	2.0	2	1	1	1	1

Fielding Statistics

Career Fielding Totals by Position

Mack Stewart — Career Fielding Totals by Position
Position	G	GS	PO	A	E	DP
P	24	0	1	7	0	2

Season-by-Season Fielding

Mack Stewart — Season-by-Season Fielding
Year	Team	Pos	G	GS	PO	A	E	DP
1944	CHN	P	8	0	0	1	0	1
1945	CHN	P	16	0	1	6	0	1

Career Games by Position

Position Diamond

Circle size = games played at each position.

Mack Stewart — Career Games by Position
Position	Games
Pitcher	24

Mack Stewart: the record in brief

July 7, 1944 and June 22, 1945 bracket Mack Stewart's time in the majors: the debut and the last game on record. All of the seasons listed were played for the Chicago Cubs. Stewart is listed as a pitcher at 167 pounds on a 6-foot-0 frame. Stewart both batted and threw right-handed, per the bio block. Stewart was born on September 23, 1914, in Stevenson, AL, USA. Stewart's death is recorded on March 21, 1960, in Macon, GA, USA. Mack Stewart was the playing name; the full given name is William Macklin.

Stewart's career pitching line is 0 wins, 1 loss and a 3.76 ERA over 24 appearances. Also on Stewart's record: 12 strikeouts. Stewart's 3.76 ERA was close to the 3.62 league figure for those seasons. Among the heaviest workloads, the lowest ERA was 4.76 in 1945, when the league's was 3.67.

The game-log section draws on 48 games of Retrosheet box scores for Stewart.

Stewart appears at one position only: pitcher, in 24 games. On the mound, Stewart's fielding totals are 1 putouts, 7 assists and 0 errors.

Frequently Asked Questions about Mack Stewart

What years did Mack Stewart play?: Mack Stewart played in Major League Baseball from 1944 to 1945.
Was Mack Stewart a pitcher?: Yes. Mack Stewart pitched in the major leagues, recording 0 wins and 12 strikeouts.
How many home runs did Mack Stewart hit?: Mack Stewart hit 0 career home runs with 1 hit.
What teams did Mack Stewart play for?: Mack Stewart played for one team, the Chicago Cubs (1944–1945).
What were Mack Stewart's career stats?: In 24 games, Mack Stewart went 0-1 with a 3.76 ERA, 12 strikeouts, and 40.2 innings pitched.
What position did Mack Stewart play?: Mack Stewart played primarily as a pitcher, the position where he appeared in the most games.
How tall was Mack Stewart and how much did he weigh?: Mack Stewart was listed at 6 feet and 167 pounds.
What was Mack Stewart's career ERA?: Mack Stewart finished with a 3.76 career ERA, going 0-1 with 12 strikeouts.
How many strikeouts did Mack Stewart have?: Mack Stewart recorded 12 career strikeouts.
Is Mack Stewart in the Hall of Fame?: No. Mack Stewart has not been inducted into the National Baseball Hall of Fame.