Jim Duffalo

Pitcher · Career Stats, Bio & Records (1961-1965)

Jim Duffalo was a pitcher who played in Major League Baseball from 1961 to 1965 for the San Francisco Giants and the Cincinnati Reds, a span of 5 seasons. Across 141 career appearances, he went 15-8 with a 3.39 ERA and 210 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 15–8
ERA 3.39
WHIP 1.35
SO 210
Pitcher PIV -2180.5
Position
Pitcher
Bats / Throws
R / R
Height / Weight
6'1" / 175 lb
Born
11/25/1935 in Helvetia, PA, USA
MLB Debut
1961-04-12
Last Game
1965-09-10

Full name: James Francis Duffalo

📊 Compare This Player 📈 View Career Timeline

Career Pitching Statistics

Jim Duffalo — Career Pitching Statistics
W L G GS CG SHO SV IP H ER HR BB SO ERA Pitcher PIV
15 8 141 14 2 0 6 297.7 248 112 27 155 210 3.39 -2180.5

Career ERA 3.39 vs. league average 3.70 across their career seasons — 8.4% better than league average.

Season-by-Season Pitching

Pitching Career Arc

Click a stat to plot it across every season.

Jim Duffalo — Season-by-Season Pitching
Year Team Lg W L G GS CG SHO SV IP H ER BB SO ERA Lg ERA Pitcher PIV
1961 SFN NL 5 1 24 4 1 0 1 61.7 59 29 32 37 4.23 4.03 (-5%) -1385.9
1962 SFN NL 1 2 24 2 0 0 0 42.0 42 17 23 29 3.64 3.96 (+8%) 156.3
1963 SFN NL 4 2 34 5 0 0 2 75.3 56 24 37 55 2.87 3.46 (+17%) 706.3
1964 SFN NL 5 1 35 3 1 0 3 74.0 57 24 31 55 2.92 3.58 (+18%) -845.2
1965 SFN NL 0 1 2 0 0 0 0 0.3 1 1 2 0 27.00 — 0.0
1965 CIN NL 0 1 22 0 0 0 0 44.3 33 17 30 34 3.45 3.50 (+1%) -812.0
Career · 6 seasons 15 8 141 14 2 0 6 297.2 248 112 155 210 3.39 — -2,180

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

Jim Duffalo — Career Batting Statistics
G AB R H 2B 3B HR RBI SB BB SO AVG OBP SLG OPS PIV
142 63 3 8 2 0 1 5 0 2 28 .127 .167 .206 .373 0

Career AVG .127 vs. league average .252 across their career seasons — 49.5% below league average.

Career OBP .167 vs. league average .317 across their career seasons — 47.4% below league average.

Career SLG .206 vs. league average .382 across their career seasons — 46.0% below league average.

Career OPS .373 vs. league average .700 across their career seasons — 46.7% below league average.

Season-by-Season Batting

Career Arc

Click a stat to plot it across every season.

Jim Duffalo — 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
1961 SFN NL 25 17 2 5 2 0 1 4 0 1 7 .294 — — — — 0.0
1962 SFN NL 24 6 0 0 0 0 0 0 0 1 4 .000 — — — — 0.0
1963 SFN NL 34 18 0 2 0 0 0 1 0 0 7 .111 — — — — 0.0
1964 SFN NL 35 14 1 1 0 0 0 0 0 0 6 .071 — — — — 0.0
1965 SFN NL 2 0 0 0 0 0 0 0 0 0 0 .000 — — — — 0.0
1965 CIN NL 22 8 0 0 0 0 0 0 0 0 4 .000 — — — — 0.0
Career · 6 seasons 142 63 3 8 2 0 1 5 0 2 28 .127 — — — — 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 (283 games) →

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

Batting — Home / Away

Jim Duffalo — Batting — Home / Away
SplitGABRHHRRBIAVG
Home71221414.182
Away71402401.100

Pitching — Home / Away

Jim Duffalo — Pitching — Home / Away
SplitGIPHERBBSOERA
Home70134.111139651002.61
Away71163.113773901114.02

Last 10 Games — Batting

Jim Duffalo — Last 10 Games — Batting
DateTmOppResABRH2B3BHRRBIBBSO
1965-09-10 CINPITL 000000000
1965-07-27 CINLADL 000000000
1965-07-24 CINHOUL 000000000
1965-07-20 CINPITL 000000000
1965-07-17 CINPHIL 100000001
1965-07-06 CINLADL 200000000
1965-07-03 CINPHIW 200000001
1965-06-30 CINNYNL 000000000
1965-06-24 CINSTLL 000000000
1965-06-20 CINCHCL 000000000

Last 10 Games — Pitching

Jim Duffalo — Last 10 Games — Pitching
DateTmOppDecIPHRERBBSOHR
1965-09-10 CINPIT — 1.0100110
1965-07-27 CINLAD — 0.2000100
1965-07-24 CINHOU — 0.1000200
1965-07-20 CINPIT — 1.0000100
1965-07-17 CINPHI — 2.2633340
1965-07-06 CINLAD — 3.1333020
1965-07-03 CINPHI — 3.2332150
1965-06-30 CINNYN — 2.0000120
1965-06-24 CINSTL — 2.0100110
1965-06-20 CINCHC — 1.1000020

Fielding Statistics

Career Fielding Totals by Position

Jim Duffalo — Career Fielding Totals by Position
Position G GS PO A E DP
P 141 14 19 46 3 2

Season-by-Season Fielding

Jim Duffalo — Season-by-Season Fielding
Year Team Pos G GS PO A E DP
1961 SFN P 24 4 2 9 0 0
1962 SFN P 24 2 1 5 1 1
1963 SFN P 34 5 7 15 1 0
1964 SFN P 35 3 4 9 1 0
1965 SFN P 2 0 0 0 0 0
1965 CIN P 22 0 5 8 0 1

Career Games by Position

Position Diamond

Circle size = games played at each position.

Jim Duffalo — Career Games by Position
Position Games
Pitcher 141

Frequently Asked Questions about Jim Duffalo

What years did Jim Duffalo play?
Jim Duffalo played in Major League Baseball from 1961 to 1965.
Was Jim Duffalo a pitcher?
Yes. Jim Duffalo pitched in the major leagues, recording 15 wins and 210 strikeouts.
How many home runs did Jim Duffalo hit?
Jim Duffalo hit 1 career home runs with 8 hits.
What was Jim Duffalo's career batting average?
Jim Duffalo batted .127 over his career, with 8 hits in 63 at bats.
How many RBI did Jim Duffalo have?
Jim Duffalo drove in 5 runs in his career.
What was Jim Duffalo's career ERA?
Jim Duffalo finished with a 3.39 career ERA, going 15-8 with 210 strikeouts.