Ron Mrozinski

Pitcher · Career Stats, Bio & Records (1954-1955)

W–L 1–3
ERA 5.36
WHIP 1.59
SO 44
Pitcher PIV -2101.5
Position
Pitcher
Bats / Throws
R / L
Height / Weight
5'11" / 160 lb
Born
9/16/1930 in White Haven, PA, USA
Died
10/19/2005 in Washington, NJ, USA
MLB Debut
1954-06-20
Last Game
1955-09-09

Full name: Ronald Frank Mrozinski

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Career Pitching Statistics

W L G GS CG SHO SV IP H ER HR BB SO ERA Pitcher PIV
1 3 37 5 1 0 1 82.3 87 49 12 44 44 5.36 -2101.5

Career ERA 5.36 vs. league average 3.95 across their career seasons — 35.7% worse than league average.

Season-by-Season Pitching

Pitching Career Arc

Click a stat to plot it across every season.

Year Team Lg W L G GS CG SHO SV IP H ER BB SO ERA Lg ERA Pitcher PIV
1954 PHI NL 1 1 15 4 1 0 0 48.0 49 24 25 26 4.50 3.90 (-15%) -2025.9
1955 PHI NL 0 2 22 1 0 0 1 34.3 38 25 19 18 6.55 4.00 (-64%) -75.6
Career · 2 seasons 1 3 37 5 1 0 1 82.1 87 49 44 44 5.36 — -2,101

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

G AB R H 2B 3B HR RBI SB BB SO AVG OBP SLG OPS PIV
37 16 0 1 0 0 0 0 0 0 10 .062 .062 .062 .125 0

Career AVG .062 vs. league average .260 across their career seasons — 75.9% below league average.

Career OBP .062 vs. league average .333 across their career seasons — 81.2% below league average.

Career SLG .062 vs. league average .392 across their career seasons — 84.1% below league average.

Career OPS .125 vs. league average .725 across their career seasons — 82.8% below league average.

Season-by-Season Batting

Career Arc

Click a stat to plot it across every season.

Year Team Lg G AB R H 2B 3B HR RBI SB BB SO AVG Lg AVG Lg OBP Lg SLG Lg OPS PIV
1954 PHI NL 15 12 0 1 0 0 0 0 0 0 7 .083 — — — — 0.0
1955 PHI NL 22 4 0 0 0 0 0 0 0 0 3 .000 — — — — 0.0
Career · 2 seasons 37 16 0 1 0 0 0 0 0 0 10 .062 — — — — 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 (74 games) →

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

Batting — Home / Away

SplitGABRHHRRBIAVG
Home1970100.143
Away1890000.000

Pitching — Home / Away

SplitGIPHERBBSOERA
Home1945.2422622235.12
Away1836.2452323215.65

Last 10 Games — Batting

DateTmOppResABRH2B3BHRRBIBBSO
1955-09-09 PHISTLL 200000002
1955-09-05 PHIBROL 000000000
1955-09-04 PHINY1L 000000000
1955-08-26 PHISTLL 000000000
1955-08-02 PHICINL 000000000
1955-07-22 PHISTLL 000000000
1955-07-17 PHICHCW 000000000
1955-07-14 PHIATLL 000000000
1955-07-04 PHIBROL 000000000
1955-07-03 PHINY1L 000000000

Last 10 Games — Pitching

DateTmOppDecIPHRERBBSOHR
1955-09-09 PHISTL — 2.2433210
1955-09-05 PHIBRO — 0.2211001
1955-09-04 PHINY1 — 1.1100110
1955-08-26 PHISTL — 3.0200110
1955-08-02 PHICIN — 1.0100000
1955-07-22 PHISTL — 1.1111100
1955-07-17 PHICHC — 1.0000110
1955-07-14 PHIATL — 2.0221410
1955-07-04 PHIBRO — 1.0100010
1955-07-03 PHINY1 — 0.1000000

Fielding Statistics

Career Fielding Totals by Position

Position G GS PO A E DP
P 37 5 3 8 1 3

Season-by-Season Fielding

Year Team Pos G GS PO A E DP
1954 PHI P 15 4 3 3 0 1
1955 PHI P 22 1 0 5 1 2

Career Games by Position

Position Diamond

Circle size = games played at each position.

Position Games
Pitcher 37

Frequently Asked Questions about Ron Mrozinski

What years did Ron Mrozinski play?
Ron Mrozinski played in Major League Baseball from 1954 to 1955.
Was Ron Mrozinski a pitcher?
Yes. Ron Mrozinski pitched in the major leagues, recording 1 wins and 44 strikeouts.
How many home runs did Ron Mrozinski hit?
Ron Mrozinski hit 0 career home runs with 1 hits.