Jim Mason

Shortstop · Career Stats, Bio & Records (1971-1979)

Jim Mason was a shortstop who played in Major League Baseball from 1971 to 1979 for 5 teams, including the Washington Senators, a span of 9 seasons. In 633 career games, he hit .203 with 322 hits, 12 home runs, and 114 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 .203
HR 12
RBI 114
H 322
OPS .534
PIV -5,915
Position
Shortstop
Bats / Throws
L / R
Height / Weight
6'2" / 185 lb
Born
8/14/1950 in Mobile, AL, USA
MLB Debut
1971-09-26
Last Game
1979-09-24

Full name: James Percy Mason

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Career Batting Statistics

Jim Mason — Career Batting Statistics
G AB R H 2B 3B HR RBI SB BB SO AVG OBP SLG OPS PIV
633 1,584 140 322 53 12 12 114 2 124 316 .203 .259 .275 .534 -5,915

Career AVG .203 vs. league average .257 across their career seasons — 20.8% below league average.

Career OBP .259 vs. league average .323 across their career seasons — 19.7% below league average.

Career SLG .275 vs. league average .376 across their career seasons — 27.0% below league average.

Career OPS .534 vs. league average .699 across their career seasons — 23.6% below league average.

Season-by-Season Batting

Career Arc

Click a stat to plot it across every season.

Jim Mason Stats, Bio & Career Records
Year Team Lg G AB R H 2B 3B HR RBI SB BB SO AVG Lg AVG Lg OBP Lg SLG Lg OPS PIV
1971 WS2 AL 3 9 0 3 0 0 0 0 0 1 3 .333 — — — — 0.0
1972 TEX AL 46 147 10 29 3 0 0 10 0 9 39 .197 .243 (-19%) .310 (-21%) .353 (-38%) .664 (-30%) -646.6
1973 TEX AL 92 238 23 49 7 2 3 19 0 23 48 .206 .256 (-20%) .325 (-16%) .378 (-23%) .703 (-20%) -769.5
1974 NYA AL 152 440 41 110 18 6 5 37 1 35 87 .250 .256 (-3%) .324 (-7%) .369 (-5%) .693 (-6%) -470.4
1975 NYA AL 94 223 17 34 3 2 2 16 0 22 49 .152 .257 (-41%) .327 (-30%) .374 (-44%) .701 (-37%) -1308.5
1976 NYA AL 93 217 17 39 7 1 1 14 0 9 37 .180 .255 (-30%) .320 (-35%) .360 (-35%) .681 (-35%) -1196.3
1977 TOR AL 22 79 10 13 3 0 0 2 1 7 10 .165 .264 (-38%) .329 (-29%) .401 (-50%) .730 (-40%) -505.8
1977 TEX AL 36 55 9 12 3 0 1 7 0 6 10 .218 .264 (-17%) .329 (-12%) .401 (-18%) .730 (-15%) -505.8
1978 TEX AL 55 105 10 20 4 0 0 3 0 5 17 .190 .257 (-26%) .323 (-30%) .378 (-40%) .702 (-35%) -573.0
1979 MON NL 40 71 3 13 5 1 0 6 0 7 16 .183 .265 (-31%) .329 (-22%) .397 (-29%) .727 (-26%) -304.0
Career · 10 seasons 633 1,584 140 322 53 12 12 114 2 124 316 .203 — — — — -6,280

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.

Postseason Statistics

Playoff Career Batting

Jim Mason — Playoff Career Batting
G AB R H 2B 3B HR RBI BB SO AVG
5 1 1 1 0 0 1 1 0 0 1.000

Playoff Batting by Year

Jim Mason — Playoff Batting by Year
Year Round Team G AB R H 2B 3B HR RBI BB SO AVG
1976 ALCS NYA 2 0 0 0 0 0 0 0 0 0 .000
1976 WS NYA 3 1 1 1 0 0 1 1 0 0 1.000

Game Log & Splits

View full game log (634 games) →

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

Batting — Home / Away

Jim Mason — Batting — Home / Away
SplitGABRHHRRBIAVG
Home32878283173660.221
Away30680257149654.186

Last 10 Games — Batting

Jim Mason — Last 10 Games — Batting
DateTmOppResABRH2B3BHRRBIBBSO
1979-09-24 WSNPITW 000000000
1979-09-11 WSNCHCW 000000000
1979-09-03 WSNNYNW 000000000
1979-09-01 WSNCINW 402200001
1979-08-31 WSNCINW 100000000
1979-08-27 WSNHOUL 200000000
1979-08-21 WSNCINL 200000010
1979-08-13 WSNHOUL 000000000
1979-08-10 WSNNYNW 401000101
1979-08-05 WSNNYNL 000000000

Fielding Statistics

Career Fielding Totals by Position

Jim Mason — Career Fielding Totals by Position
Position G GS PO A E DP
2B 21 8 30 24 2 8
3B 29 23 16 35 5 3
SS 576 452 823 1436 97 278

Season-by-Season Fielding

Jim Mason — Season-by-Season Fielding
Year Team Pos G GS PO A E DP
1971 WS2 SS 3 3 8 13 1 1
1972 TEX 3B 10 10 6 13 2 0
1972 TEX SS 32 32 52 93 8 14
1973 TEX 2B 19 8 30 24 2 8
1973 TEX 3B 1 0 0 0 0 0
1973 TEX SS 74 64 113 206 18 43
1974 NYA SS 152 144 241 430 25 87
1975 NYA 2B 1 0 0 0 0 0
1975 NYA SS 93 73 134 209 16 45
1976 NYA SS 93 70 128 245 13 47
1977 TOR SS 22 20 49 51 3 9
1977 TEX 3B 1 0 0 0 1 0
1977 TEX SS 32 12 26 57 2 11
1978 TEX 2B 1 0 0 0 0 0
1978 TEX 3B 11 11 6 13 2 2
1978 TEX SS 42 20 41 79 8 12
1979 MON 3B 6 2 4 9 0 1
1979 MON SS 33 14 31 53 3 9

Career Games by Position

Position Diamond

Circle size = games played at each position.

Jim Mason Stats, Bio & Career Records
Position Games
Second Base 21
Third Base 29
Shortstop 576
Designated Hitter 2

Most Similar Players

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

Career Spans

Jim Mason (highlighted) compared to peers across the same era.

  1. 98
    Jackie Hernandez
    .208 avg, 12 HR
  2. 71
    Jack Heidemann
    .211 avg, 9 HR
  3. 70
    Hector Torres
    .216 avg, 18 HR
  4. 63
    Nick Allen
    .221 avg, 12 HR
  5. 53
    Mick Kelleher
    .213 avg, 0 HR
  6. 50
    Luis Alvarado
    .214 avg, 5 HR

Jim Mason: the record in brief

Between the debut on September 26, 1971 and the final game on September 24, 1979, Jim Mason built the record summarized on this page. Mason played for the Washington Senators (1971), the Texas Rangers (1972 to 1978), the New York Yankees (1974 through 1976), the Toronto Blue Jays (1977), and the Montreal Expos (1979). Mason is listed as a shortstop at 6-foot-2 and 185 pounds. Mason threw right-handed and batted left-handed, per the bio block. The recorded birth is August 14, 1950, in Mobile, AL, USA. Mason's full given name, per the bio, is James Percy Mason.

Mason collected 322 hits in 1,584 at bats across 633 games, good for a .203 batting average, adding 12 home runs and 114 RBI. On-base and slugging figures of .259 and .275 give Mason a career OPS of .534. Mason's .203 average ran 20.8% below the .257 that the league posted over the same seasons. By OPS the gap is 23.6% below league average (.534 against .699). The highest hit total in a season was 110, in 1974. Even the best average among the busiest seasons, .250 in 1974, did not top the league's .256.

Frequently Asked Questions about Jim Mason

What years did Jim Mason play?
Jim Mason played in Major League Baseball from 1971 to 1979.
Was Jim Mason a pitcher?
No. Jim Mason was a position player (Shortstop).
How many home runs did Jim Mason hit?
Jim Mason hit 12 career home runs with 322 hits.
What teams did Jim Mason play for?
Jim Mason played for 4 teams: the Texas Rangers (1971–1973, 1977–1978), the New York Yankees (1974–1976), the Toronto Blue Jays (1977), and the Montreal Expos (1979).
What were Jim Mason's career stats?
In 633 games, Jim Mason had 322 hits, 12 home runs, 114 RBI, 140 runs, and 2 stolen bases, with a .203 batting average.
What position did Jim Mason play?
Jim Mason played primarily as a shortstop, the position where he appeared in the most games.
How tall was Jim Mason and how much did he weigh?
Jim Mason was listed at 6 feet 2 inches and 185 pounds.
How many home runs did Jim Mason hit each season?
Jim Mason's home runs by season: 0 in 1971, 0 in 1972, 3 in 1973, 5 in 1974, 2 in 1975, 1 in 1976, 1 in 1977, 0 in 1978, and 0 in 1979. His most in one season was 5, in 1974.
What was Jim Mason's career batting average?
Jim Mason batted .203 over his career, with 322 hits in 1,584 at bats.
How many RBI did Jim Mason have?
Jim Mason drove in 114 runs in his career.
Is Jim Mason in the Hall of Fame?
No. Jim Mason has not been inducted into the National Baseball Hall of Fame.