Duke Maas

Pitcher · Career Stats, Bio & Records (1955-1961)

Duke Maas was a pitcher who played in Major League Baseball from 1955 to 1961 for the Detroit Tigers, the Kansas City Athletics, and the New York Yankees, a span of 7 seasons. Across 195 career appearances, he went 45-44 with a 4.19 ERA and 356 strikeouts. He also batted .117 with 1 home runs.

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

W–L 45–44
ERA 4.19
WHIP 1.40
SO 356
Pitcher PIV -1881.8
Position
Pitcher
Bats / Throws
R / R
Height / Weight
5'10" / 170 lb
Born
1/31/1929 in Utica, MI, USA
Died
12/7/1976 in Mount Clemens, MI, USA
MLB Debut
1955-04-21
Last Game
1961-04-23

Full name: Duane Frederick Maas

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Career Pitching Statistics

Duke Maas — Career Pitching Statistics
W L G GS CG SHO SV IP H ER HR BB SO ERA Pitcher PIV
45 44 195 91 21 7 15 734.2 745 342 71 284 356 4.19 -1881.8

Career ERA 4.19 vs. league average 3.92 across their career seasons — 7.0% worse than league average.

Season-by-Season Pitching

Pitching Career Arc

Click a stat to plot it across every season.

Duke Maas Stats, Bio & Career Records
Year Team Lg W L G GS CG SHO SV IP H ER BB SO ERA Lg ERA Pitcher PIV
1955 DET AL 5 6 18 16 5 2 0 86.2 91 47 50 42 4.88 4.00 (-22%) -542.4
1956 DET AL 0 7 26 7 0 0 0 63.1 81 46 32 34 6.54 3.96 (-65%) -1549.3
1957 DET AL 10 14 45 26 8 2 6 219.1 210 80 65 116 3.28 3.83 (+14%) 730.7
1958 KC1 AL 4 5 10 7 3 1 1 55.1 49 24 13 19 3.90 3.86 (-1%) 851.2
1958 NYA AL 7 3 22 13 2 1 0 101.1 93 43 36 50 3.82 3.86 (+1%) 239.2
1959 NYA AL 14 8 38 21 3 1 4 138.0 149 68 53 67 4.43 3.90 (-14%) -629.6
1960 NYA AL 5 1 35 1 0 0 4 70.1 70 32 35 28 4.09 3.82 (-7%) -981.5
1961 NYA AL 0 0 1 0 0 0 0 0.1 2 2 0 0 54.00 — 0.0
Career · 8 seasons 45 44 195 91 21 7 15 734.2 745 342 284 356 4.19 — -1,882

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

Duke Maas — Career Batting Statistics
G AB R H 2B 3B HR RBI SB BB SO AVG OBP SLG OPS PIV
195 214 13 25 4 1 1 14 0 13 80 .117 .165 .159 .324 -746

Career AVG .117 vs. league average .257 across their career seasons — 54.6% below league average.

Career OBP .165 vs. league average .327 across their career seasons — 49.5% below league average.

Career SLG .159 vs. league average .394 across their career seasons — 59.7% below league average.

Career OPS .324 vs. league average .721 across their career seasons — 55.0% below league average.

Season-by-Season Batting

Career Arc

Click a stat to plot it across every season.

Duke Maas — Season-by-Season Batting
Year Team Lg G AB R H 2B 3B HR RBI SB BB SO AVG Lg AVG Lg OBP Lg SLG Lg OPS PIV
1955 DET AL 18 30 2 5 0 1 0 2 0 1 12 .167 — — — — 0.0
1956 DET AL 26 16 1 3 1 0 0 1 0 2 8 .188 — — — — 0.0
1957 DET AL 45 71 2 6 1 0 1 8 0 3 27 .085 .257 (-67%) .323 (-63%) .391 (-64%) .715 (-64%) -746.3
1958 KC1 AL 10 17 2 3 2 0 0 1 0 1 5 .176 — — — — 0.0
1958 NYA AL 22 34 3 3 0 0 0 1 0 3 11 .088 — — — — 0.0
1959 NYA AL 38 40 3 5 0 0 0 1 0 3 15 .125 — — — — 0.0
1960 NYA AL 35 6 0 0 0 0 0 0 0 0 2 .000 — — — — 0.0
1961 NYA AL 1 0 0 0 0 0 0 0 0 0 0 .000 — — — — 0.0
Career · 8 seasons 195 214 13 25 4 1 1 14 0 13 80 .117 — — — — -746

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.

Postseason Statistics

Playoff Career Batting

Duke Maas — Playoff Career Batting
G AB R H 2B 3B HR RBI BB SO AVG
2 0 0 0 0 0 0 0 0 0 .000

Playoff Batting by Year

Duke Maas — Playoff Batting by Year
Year Round Team G AB R H 2B 3B HR RBI BB SO AVG
1960 WS NYA 1 0 0 0 0 0 0 0 0 0 .000
1958 WS NYA 1 0 0 0 0 0 0 0 0 0 .000

Playoff Career Pitching

Duke Maas — Playoff Career Pitching
W L G GS SV IP H ER BB SO ERA
0 0 2 0 0 2.1 4 4 1 1 15.43

Playoff Pitching by Year

Duke Maas — Playoff Pitching by Year
Year Round Team W L G GS SV IP H ER BB SO ERA
1960 WS NYA 0 0 1 0 0 2.0 2 1 0 1 4.50
1958 WS NYA 0 0 1 0 0 0.1 2 3 1 0 81.00

Game Log & Splits

View full game log (390 games) →

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

Batting — Home / Away

Duke Maas — Batting — Home / Away
SplitGABRHHRRBIAVG
Home989961017.101
Away9711571507.130

Pitching — Home / Away

Duke Maas — Pitching — Home / Away
SplitGIPHERBBSOERA
Home98370.23631611571983.91
Away97364.03821801271594.45

Last 10 Games — Batting

Duke Maas — Last 10 Games — Batting
DateTmOppResABRH2B3BHRRBIBBSO
1961-04-23 NYYBALL 000000000
1960-10-02 NYYBOSW 000000000
1960-09-30 NYYBOSW 000000000
1960-09-26 NYYMINW 000000000
1960-09-21 NYYMINW 100000000
1960-09-13 NYYKC1L 000000000
1960-09-06 NYYBOSL 000000000
1960-08-31 NYYKC1L 000000000
1960-08-28 NYYDETL 000000000
1960-08-26 NYYCLEW 100000000

Last 10 Games — Pitching

Duke Maas — Last 10 Games — Pitching
DateTmOppDecIPHRERBBSOHR
1961-04-23 NYYBAL — 0.1222000
1960-10-02 NYYBOS W 2.0311210
1960-09-30 NYYBOS W 1.0000110
1960-09-26 NYYMIN W 2.0100020
1960-09-21 NYYMIN SV 4.0200010
1960-09-13 NYYKC1 — 2.0311100
1960-09-06 NYYBOS — 3.0422310
1960-08-31 NYYKC1 — 2.0644200
1960-08-28 NYYDET — 3.0100010
1960-08-26 NYYCLE SV 2.0000010

Fielding Statistics

Career Fielding Totals by Position

Duke Maas — Career Fielding Totals by Position
Position G GS PO A E DP
P 195 91 40 126 7 7

Season-by-Season Fielding

Duke Maas — Season-by-Season Fielding
Year Team Pos G GS PO A E DP
1955 DET P 18 16 2 17 0 0
1956 DET P 26 7 5 8 2 0
1957 DET P 45 26 8 41 1 2
1958 KC1 P 10 7 4 10 0 0
1958 NYA P 22 13 8 9 1 0
1959 NYA P 38 21 5 28 1 2
1960 NYA P 35 1 8 13 2 3
1961 NYA P 1 0 0 0 0 0

Career Games by Position

Position Diamond

Circle size = games played at each position.

Duke Maas — Career Games by Position
Position Games
Pitcher 195

Most Similar Players

Career comps based on counting + rate stats and primary position. Score is relative — closest peer anchors at ~98%.

Career Spans

Duke Maas (highlighted) compared to peers across the same era.

  1. 98
    Steve Comer
    44-37, 4.13 ERA
  2. 97
    Eric King
    52-45, 3.97 ERA
  3. 96
    Roric Harrison
    30-35, 4.24 ERA
  4. 95
    Jerry Walker
    37-44, 4.36 ERA
  5. 95
    Bob Hendley
    48-52, 3.97 ERA
  6. 94
    Al Gettel
    38-45, 4.28 ERA

Duke Maas: the record in brief

April 21, 1955 and April 23, 1961 bracket Duke Maas's time in the majors: the debut and the last game on record. Club by club, the record runs the Detroit Tigers (1955 through 1957), the Kansas City Athletics (1958), and the New York Yankees (1958 through 1961). Maas played primarily as a pitcher and threw and hit right-handed. Born on January 31, 1929, in Utica, MI, USA, Maas was listed at 5'10" and 170 pounds. Maas's death is recorded on December 7, 1976, in Mount Clemens, MI, USA. Maas's full given name, per the bio, is Duane Frederick Maas.

Maas pitched in 195 games, starting 91, and finished with a 45-44 record and 4.19 ERA. The totals include 356 strikeouts, 21 complete games, 7 shutouts, and 15 saves. Against a 3.92 league ERA for the same seasons, the 4.19 mark was 7.0% worse. 1959 brought Maas a season-high 14 wins. 1957 produced Maas's most strikeouts, 116. 1957 was Maas's sharpest full season, a 3.28 ERA against the league's 3.83.

Frequently Asked Questions about Duke Maas

What years did Duke Maas play?
Duke Maas played in Major League Baseball from 1955 to 1961.
Was Duke Maas a pitcher?
Yes. Duke Maas pitched in the major leagues, recording 45 wins and 356 strikeouts.
How many home runs did Duke Maas hit?
Duke Maas hit 1 career home runs with 25 hits.
What was Duke Maas's career batting average?
Duke Maas batted .117 over his career, with 25 hits in 214 at bats.
How many RBI did Duke Maas have?
Duke Maas drove in 14 runs in his career.
What was Duke Maas's career ERA?
Duke Maas finished with a 4.19 career ERA, going 45-44 with 356 strikeouts.