Jack Killilay

Pitcher · Career Stats, Bio & Records (1911)

Jack Killilay was a pitcher who played in Major League Baseball in 1911 for the Boston Red Sox. Across 14 career appearances, he went 4-2 with a 3.54 ERA and 28 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

W–L 4–2
ERA 3.54
WHIP 1.66
SO 28
Pitcher PIV -1177.1
Position
Pitcher
Bats / Throws
R / R
Height / Weight
5'11" / 165 lb
Born
5/24/1887 in Leavenworth, KS, USA
Died
10/21/1968 in Tulsa, OK, USA
MLB Debut
1911-05-13
Last Game
1911-09-22

Full name: John William Killilay

Career Pitching Statistics

Jack Killilay — Career Pitching Statistics
W L G GS CG SHO SV IP H ER HR BB SO ERA Pitcher PIV
4 2 14 7 1 0 0 61.0 65 24 0 36 28 3.54 -1177.1

Career ERA 3.54 vs. league average 3.37 across their career seasons — near league average.

Season-by-Season Pitching

Pitching Career Arc

Click a stat to plot it across every season.

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

Jack Killilay — Career Batting Statistics
G AB R H 2B 3B HR RBI SB BB SO AVG OBP SLG OPS PIV
14 24 0 1 1 0 0 1 0 2 18 .042 .115 .083 .199 0

Career AVG .042 vs. league average .267 across their career seasons — 84.4% below league average.

Career OBP .115 vs. league average .336 across their career seasons — 65.7% below league average.

Career SLG .083 vs. league average .357 across their career seasons — 76.6% below league average.

Career OPS .199 vs. league average .693 across their career seasons — 71.3% below league average.

Season-by-Season Batting

Career Arc

Click a stat to plot it across every season.

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.

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

Batting — Home / Away

Jack Killilay — Batting — Home / Away
SplitGABRHHRRBIAVG
Home6130000.000
Away8110101.091

Pitching — Home / Away

Jack Killilay — Pitching — Home / Away
SplitGIPHERBBSOERA
Home635.230820142.02
Away830.1351619124.75

Last 10 Games — Batting

Jack Killilay — Last 10 Games — Batting
DateTmOppResABRH2B3BHRRBIBBSO
1911-09-22 BOSDETL 000000000
1911-09-08 BOSPHAL 100000011
1911-08-18 BOSDETW 000000000
1911-08-12 BOSPHAL 200000001
1911-08-08 BOSCLEW 400000004
1911-08-04 BOSDETW 100000011
1911-07-31 BOSSLAL 300000000
1911-07-18 BOSDETL 000000000
1911-07-15 BOSDETL 100000001
1911-07-04 BOSMINW 200000001

Last 10 Games — Pitching

Jack Killilay — Last 10 Games — Pitching
DateTmOppDecIPHRERBBSOHR
1911-09-22 BOSDET 1.0122300
1911-09-08 BOSPHA L 4.2744200
1911-08-18 BOSDET 1.0110200
1911-08-12 BOSPHA L 5.1633430
1911-08-08 BOSCLE W 8.1744750
1911-08-04 BOSDET W 6.0400020
1911-07-31 BOSSLA 7.0500320
1911-07-18 BOSDET 0.2433200
1911-07-15 BOSDET 4.0100020
1911-07-04 BOSMIN 4.1411200

Fielding Statistics

Career Fielding Totals by Position

Jack Killilay — Career Fielding Totals by Position
Position G GS PO A E DP
P 14 0 1 17 0 0

Season-by-Season Fielding

Career Games by Position

Position Diamond

Circle size = games played at each position.

Jack Killilay — Career Games by Position
Position Games
Pitcher 14

Frequently Asked Questions about Jack Killilay

Was Jack Killilay a pitcher?
Yes. Jack Killilay pitched in the major leagues, recording 4 wins and 28 strikeouts.
How many home runs did Jack Killilay hit?
Jack Killilay hit 0 career home runs with 1 hits.
What was Jack Killilay's career batting average?
Jack Killilay batted .042 over his career, with 1 hits in 24 at bats.
How many RBI did Jack Killilay have?
Jack Killilay drove in 1 runs in his career.
What was Jack Killilay's career ERA?
Jack Killilay finished with a 3.54 career ERA, going 4-2 with 28 strikeouts.
How many strikeouts did Jack Killilay have?
Jack Killilay recorded 28 career strikeouts.