Ad Brennan

Pitcher · Career Stats, Bio & Records (1910-1918)

Ad Brennan was a pitcher who played in Major League Baseball from 1910 to 1918 for 4 teams, including the Philadelphia Phillies, a span of 9 seasons. Across 129 career appearances, he went 37-36 with a 3.11 ERA and 283 strikeouts. He also batted .218 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 37–36
ERA 3.11
WHIP 1.31
SO 283
Pitcher PIV -154.3
Position
Pitcher
Bats / Throws
L / L
Height / Weight
5'11" / 170 lb
Born
7/18/1887 in La Harpe, KS, USA
Died
1/7/1962 in Kansas City, MO, USA
MLB Debut
1910-05-19
Last Game
1918-07-27

Full name: Addison Foster Brennan

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Career Pitching Statistics

Ad Brennan — Career Pitching Statistics
W L G GS CG SHO SV IP H ER HR BB SO ERA Pitcher PIV
37 36 129 77 40 5 3 677.0 694 234 21 194 283 3.11 -154.3

Career ERA 3.11 vs. league average 3.02 across their career seasons — near league average.

Season-by-Season Pitching

Pitching Career Arc

Click a stat to plot it across every season.

Ad Brennan Stats, Bio & Career Records
Year Team Lg W L G GS CG SHO SV IP H ER BB SO ERA Lg ERA Pitcher PIV
1910 PHI NL 2 0 19 5 2 0 0 73.1 72 19 28 28 2.33 2.79 (+16%) -774.7
1911 PHI NL 2 1 5 3 1 0 0 22.2 22 9 12 12 3.57 3.37 (-6%) -50.6
1912 PHI NL 11 9 27 19 13 1 2 174.0 185 69 49 78 3.57 3.36 (-6%) 885.8
1913 PHI NL 14 12 40 25 12 1 1 207.0 204 55 46 94 2.39 3.07 (+22%) 1716.7
1914 CHF FL 5 5 16 11 5 1 0 85.2 84 34 21 31 3.57 2.93 (-22%) -1126.5
1915 CHF FL 3 9 19 13 7 2 0 106.0 117 44 30 40 3.74 2.90 (-29%) -805.0
1918 WS1 AL 0 0 2 1 0 0 0 5.1 7 3 5 0 5.06 — 0.0
1918 CLE AL 0 0 1 0 0 0 0 3.0 3 1 3 0 3.00 — 0.0
Career · 8 seasons 37 36 129 77 40 5 3 677.0 694 234 194 283 3.11 — -154

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

Ad Brennan — Career Batting Statistics
G AB R H 2B 3B HR RBI SB BB SO AVG OBP SLG OPS PIV
132 220 15 48 6 2 1 12 1 12 40 .218 .265 .277 .542 -463

Career AVG .218 vs. league average .257 across their career seasons — 15.2% below league average.

Career OBP .265 vs. league average .325 across their career seasons — 18.4% below league average.

Career SLG .277 vs. league average .341 across their career seasons — 18.6% below league average.

Career OPS .542 vs. league average .665 across their career seasons — 18.5% below league average.

Season-by-Season Batting

Career Arc

Click a stat to plot it across every season.

Ad Brennan — 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
1910 PHI NL 21 25 1 7 0 0 0 1 1 3 5 .280 — — — — 0.0
1911 PHI NL 5 9 0 2 0 0 0 0 0 0 3 .222 — — — — 0.0
1912 PHI NL 27 59 8 15 1 2 1 6 0 4 9 .254 .268 (-5%) .335 (-7%) .358 (+9%) .694 (+1%) -4.6
1913 PHI NL 40 67 3 11 2 0 0 2 0 1 12 .164 .259 (-37%) .325 (-46%) .345 (-44%) .670 (-45%) -458.4
1914 CHF FL 16 32 2 8 3 0 0 3 0 0 6 .250 — — — — 0.0
1915 CHF FL 20 27 1 5 0 0 0 0 0 4 5 .185 — — — — 0.0
1918 WS1 AL 2 1 0 0 0 0 0 0 0 0 0 .000 — — — — 0.0
1918 CLE AL 1 0 0 0 0 0 0 0 0 0 0 .000 — — — — 0.0
Career · 8 seasons 132 220 15 48 6 2 1 12 1 12 40 .218 — — — — -463

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 (261 games) →

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

Batting — Home / Away

Ad Brennan — Batting — Home / Away
SplitGABRHHRRBIAVG
Home6410662503.236
Away6811492319.202

Pitching — Home / Away

Ad Brennan — Pitching — Home / Away
SplitGIPHERBBSOERA
Home63340.1331110981472.91
Away66341.1366145951323.82

Last 10 Games — Batting

Ad Brennan — Last 10 Games — Batting
DateTmOppResABRH2B3BHRRBIBBSO
1918-07-27 CLENYYW 000000000
1918-07-06 MINSLAL 000000000
1918-07-03 MINNYYW 100000000
1915-09-21 CHFNEWW 400000000
1915-09-07 CHFSLFL 100000010
1915-09-06 CHFSLFL 100000000
1915-08-31 CHFPTFL 200000001
1915-08-25 CHFSLFL 200000010
1915-08-21 CHFBUFL 403000000
1915-08-17 CHFBLFW 200000000

Last 10 Games — Pitching

Ad Brennan — Last 10 Games — Pitching
DateTmOppDecIPHRERBBSOHR
1918-07-27 CLENYY — 3.0311300
1918-07-06 MINSLA — 0.1033300
1918-07-03 MINNYY — 5.0721000
1915-09-21 CHFNEW W 8.1963320
1915-09-07 CHFSLF L 8.0833010
1915-09-06 CHFSLF — 4.0620000
1915-08-31 CHFPTF L 8.0955340
1915-08-25 CHFSLF L 9.01142161
1915-08-21 CHFBUF L 8.01154052
1915-08-17 CHFBLF W 9.0400430

Fielding Statistics

Career Fielding Totals by Position

Ad Brennan — Career Fielding Totals by Position
Position G GS PO A E DP
OF 2 0 1 0 0 0
P 129 5 25 175 11 5

Season-by-Season Fielding

Ad Brennan — Season-by-Season Fielding
Year Team Pos G GS PO A E DP
1910 PHI OF 1 0 1 0 0 0
1910 PHI P 19 5 2 13 1 1
1911 PHI P 5 0 1 8 1 0
1912 PHI P 27 0 7 53 1 1
1913 PHI P 40 0 12 53 4 1
1914 CHF P 16 0 1 23 3 2
1915 CHF OF 1 0 0 0 0 0
1915 CHF P 19 0 2 23 1 0
1918 WS1 P 2 0 0 2 0 0
1918 CLE P 1 0 0 0 0 0

Career Games by Position

Position Diamond

Circle size = games played at each position.

Ad Brennan — Career Games by Position
Position Games
Pitcher 129
Center Field 1
Right Field 2

Most Similar Players

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

Career Spans

Ad Brennan (highlighted) compared to peers across the same era.

  1. 98
    Rube Manning
    22-32, 3.14 ERA
  2. 92
    George Johnson
    40-43, 2.95 ERA
  3. 92
    Earl Yingling
    25-34, 3.22 ERA
  4. 91
    Bill Steen
    28-32, 3.05 ERA
  5. 90
    Hiram Bithorn
    34-31, 3.16 ERA
  6. 89
    Pastor Pareda
    19-27, 3.20 ERA

Ad Brennan: the record in brief

Ad Brennan played a first major league game on May 19, 1910 and a last one on July 27, 1918. By club, Brennan's seasons break down as the Philadelphia Phillies (1910 through 1913), the Chicago Chi-Feds (1914), the Chicago Whales (1915), the Washington Senators (1918), and the Cleveland Indians (1918). Born on July 18, 1887, in La Harpe, KS, USA, Brennan is listed as a pitcher and both batted and threw left-handed. Brennan's listed size is 170 pounds on a 5-foot-11 frame. The bio records the death on January 7, 1962, in Kansas City, MO, USA. The bio lists the given name Addison Foster.

Brennan pitched in 129 games, starting 77, and finished with a 37-36 record and 3.11 ERA. The totals include 283 strikeouts, 40 complete games, and 5 shutouts. Brennan's 3.11 ERA was close to the 3.02 league figure for those seasons. The best win total was 14, in 1913. Among the heaviest workloads, the lowest ERA was 2.39 in 1913, when the league's was 3.07.

Frequently Asked Questions about Ad Brennan

What years did Ad Brennan play?
Ad Brennan played in Major League Baseball from 1910 to 1918.
Was Ad Brennan a pitcher?
Yes. Ad Brennan pitched in the major leagues, recording 37 wins and 283 strikeouts.
How many home runs did Ad Brennan hit?
Ad Brennan hit 1 career home run with 48 hits.
What teams did Ad Brennan play for?
Ad Brennan played for 4 teams: the Philadelphia Phillies (1910–1913), the Chicago Whales (1914–1915), the Washington Senators (1918), and the Cleveland Indians (1918).
What were Ad Brennan's career stats?
In 129 games, Ad Brennan went 37-36 with a 3.11 ERA, 283 strikeouts, 677.0 innings pitched, and 3 saves. At the plate he had 48 hits and 1 home runs.
What position did Ad Brennan play?
Ad Brennan played primarily as a pitcher, the position where he appeared in the most games.
How tall was Ad Brennan and how much did he weigh?
Ad Brennan was listed at 5 feet 11 inches and 170 pounds.
What was Ad Brennan's career ERA?
Ad Brennan finished with a 3.11 career ERA, going 37-36 with 283 strikeouts.
How many strikeouts did Ad Brennan have?
Ad Brennan recorded 283 career strikeouts.
Is Ad Brennan in the Hall of Fame?
No. Ad Brennan has not been inducted into the National Baseball Hall of Fame.