Mario Guerrero

Shortstop · Career Stats, Bio & Records (1973-1980)

Mario Guerrero was a shortstop who played in Major League Baseball from 1973 to 1980 for 4 teams, including the Boston Red Sox, a span of 8 seasons. In 697 career games, he hit .257 with 578 hits, 7 home runs, and 170 RBI.

AVG (Batting Average):
Hits divided by at bats. .300 is the traditional mark of an excellent hitter.
HR (Home Runs):
Hits on which the batter circled the bases and scored, almost always by clearing the outfield fence.
RBI (Runs Batted In):
Runs that scored as a direct result of a batter's plate appearance.
OPS (On-Base Plus Slugging):
On-base percentage plus slugging percentage, the quickest single summary of offensive value. .900 or better is star-level.

Data updated

AVG .257
HR 7
RBI 170
H 578
OPS .597
PIV -5,675
Position
Shortstop
Bats / Throws
R / R
Height / Weight
5'10" / 155 lb
Born
9/28/1949 in Santo Domingo, Distrito Nacional, D.R.
Died
7/2/2023 in Santo Domingo, Distrito Nacional, D.R.
MLB Debut
1973-04-08
Last Game
1980-10-01

Full name: Mario Miguel Guerrero

📊 Compare This Player 📈 View Career Timeline

Career Batting Statistics

Mario Guerrero — Career Batting Statistics
G AB R H 2B 3B HR RBI SB BB SO AVG OBP SLG OPS PIV
697 2,251 166 578 79 12 7 170 8 84 152 .257 .285 .312 .597 -5,675

Career AVG .257 vs. league average .260 across their career seasons — near league average.

Career OBP .285 vs. league average .326 across their career seasons — 12.4% below league average.

Career SLG .312 vs. league average .381 across their career seasons — 18.2% below league average.

Career OPS .597 vs. league average .707 across their career seasons — 15.5% below league average.

Season-by-Season Batting

Career Arc

Click a stat to plot it across every season.

Mario Guerrero — 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
1973 BOS AL 66 219 19 51 5 2 0 11 2 10 21 .233 .256 (-9%) .325 (-16%) .378 (-28%) .703 (-22%) -777.9
1974 BOS AL 93 284 18 70 6 2 0 23 3 13 22 .246 .256 (-4%) .324 (-13%) .369 (-24%) .693 (-19%) -830.0
1975 SLN NL 64 184 17 44 9 0 0 11 0 10 7 .239 .257 (-7%) .327 (-14%) .374 (-23%) .701 (-19%) -563.5
1976 CAL AL 83 268 24 76 12 0 1 18 0 7 12 .284 .255 (+11%) .320 (-5%) .360 (-6%) .681 (-6%) -285.1
1977 CAL AL 86 244 17 69 8 2 1 28 0 4 16 .283 .264 (+7%) .329 (-11%) .401 (-14%) .730 (-13%) -546.2
1978 OAK AL 143 505 27 139 18 4 3 38 0 15 35 .275 .257 (+7%) .323 (-7%) .378 (-9%) .702 (-8%) -673.9
1979 OAK AL 46 166 12 38 5 0 0 18 0 6 7 .229 .265 (-14%) .329 (-23%) .397 (-35%) .727 (-30%) -800.5
1980 OAK AL 116 381 32 91 16 2 2 23 3 19 32 .239 .264 (-10%) .326 (-16%) .387 (-21%) .714 (-19%) -1198.0
Career · 8 seasons 697 2,251 166 578 79 12 7 170 8 84 152 .257 — — — — -5,675

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 (697 games) →

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

Batting — Home / Away

Mario Guerrero — Batting — Home / Away
SplitGABRHHRRBIAVG
Home339109464265282.242
Away3581157102313588.271

Last 10 Games — Batting

Mario Guerrero — Last 10 Games — Batting
DateTmOppResABRH2B3BHRRBIBBSO
1980-10-01 OAKCHWW 410000010
1980-09-26 OAKMILL 512000000
1980-09-25 OAKCHWL 401000000
1980-09-24 OAKCHWW 411100001
1980-09-23 OAKCHWW 300000001
1980-09-21 OAKKCRW 400000002
1980-09-19 OAKKCRL 402000100
1980-09-18 OAKTEXL 300000100
1980-09-17 OAKTEXW 401100200
1980-09-16 OAKTEXW 300000110

Fielding Statistics

Career Fielding Totals by Position

Mario Guerrero — Career Fielding Totals by Position
Position G GS PO A E DP
2B 77 60 140 171 8 40
SS 576 517 878 1488 96 288

Season-by-Season Fielding

Mario Guerrero — Season-by-Season Fielding
Year Team Pos G GS PO A E DP
1973 BOS 2B 24 20 47 54 3 19
1973 BOS SS 46 33 59 129 5 30
1974 BOS SS 93 81 136 266 13 50
1975 SLN SS 64 54 76 198 13 29
1976 CAL 2B 41 34 80 97 5 19
1976 CAL SS 41 25 49 75 9 13
1977 CAL 2B 12 6 13 20 0 2
1977 CAL SS 31 29 48 85 2 16
1978 OAK SS 142 137 258 330 26 67
1979 OAK SS 43 43 68 129 10 33
1980 OAK SS 116 115 184 276 18 50

Career Games by Position

Position Diamond

Circle size = games played at each position.

Mario Guerrero — Career Games by Position
Position Games
Second Base 77
Shortstop 576
Designated Hitter 26

Most Similar Players

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

Career Spans

Mario Guerrero (highlighted) compared to peers across the same era.

  1. 98
    Freddie Maguire
    .257 avg, 1 HR
  2. 92
    Danny Thompson
    .248 avg, 15 HR
  3. 85
    Jerry Terrell
    .253 avg, 4 HR
  4. 79
    Greg Pryor
    .250 avg, 14 HR
  5. 77
    Larry Milbourne
    .254 avg, 11 HR
  6. 76
    Billy Lauder
    .260 avg, 5 HR

Mario Guerrero: the record in brief

Mario Guerrero played a first major league game on April 8, 1973 and a last one on October 1, 1980. The season rows list, in order, the Boston Red Sox (1973 through 1974), the St. Louis Cardinals (1975), the California Angels (1976 through 1977), and the Oakland Athletics (1978 through 1980). Guerrero played primarily as a shortstop and batted and threw right-handed. Born on September 28, 1949, in Santo Domingo, Distrito Nacional, D.R., Guerrero was listed at 155 pounds on a 5-foot-10 frame. Guerrero died on July 2, 2023, in Santo Domingo, Distrito Nacional, D.R. The given name on file is Mario Miguel Guerrero.

Guerrero finished with 578 hits from 2,251 at bats in 697 games, which works out to .257, plus 7 homers and 170 runs batted in. Reaching base at a .285 clip and slugging .312, Guerrero finished with a .597 OPS. Guerrero hit .257 while the league hit .260 over the same span, a figure close to average. By OPS the gap is 15.5% below league average (.597 against .707). The hits column peaks at 139, in 1978.

Frequently Asked Questions about Mario Guerrero

What years did Mario Guerrero play?
Mario Guerrero played in Major League Baseball from 1973 to 1980.
Was Mario Guerrero a pitcher?
No. Mario Guerrero was a position player (Shortstop).
How many home runs did Mario Guerrero hit?
Mario Guerrero hit 7 career home runs with 578 hits.
What teams did Mario Guerrero play for?
Mario Guerrero played for 4 teams: the Boston Red Sox (1973–1974), the St. Louis Cardinals (1975), the California Angels (1976–1977), and the Oakland Athletics (1978–1980).
What were Mario Guerrero's career stats?
In 697 games, Mario Guerrero had 578 hits, 7 home runs, 170 RBI, 166 runs, and 8 stolen bases, with a .257 batting average.
What position did Mario Guerrero play?
Mario Guerrero played primarily as a shortstop, the position where he appeared in the most games.
How tall was Mario Guerrero and how much did he weigh?
Mario Guerrero was listed at 5 feet 10 inches and 155 pounds.
How many home runs did Mario Guerrero hit each season?
Mario Guerrero's home runs by season: 0 in 1973, 0 in 1974, 0 in 1975, 1 in 1976, 1 in 1977, 3 in 1978, 0 in 1979, and 2 in 1980. His most in one season was 3, in 1978.
What was Mario Guerrero's career batting average?
Mario Guerrero batted .257 over his career, with 578 hits in 2,251 at bats.
How many RBI did Mario Guerrero have?
Mario Guerrero drove in 170 runs in his career.
Is Mario Guerrero in the Hall of Fame?
No. Mario Guerrero has not been inducted into the National Baseball Hall of Fame.