Masahide Kobayashi

Pitcher · Career Stats, Bio & Records (2008-2009)

Masahide Kobayashi was a pitcher who played in Major League Baseball from 2008 to 2009 for the Cleveland Guardians, a span of 2 seasons. Across 67 career appearances, he went 4-5 with a 5.10 ERA and 39 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 4–5
ERA 5.10
WHIP 1.45
SO 39
Pitcher PIV -316.4
Position
Pitcher
Bats / Throws
R / R
Height / Weight
6'0" / 195 lb
Born
5/24/1974 in Yamanashi, Yamanashi, Japan
MLB Debut
2008-04-02
Last Game
2009-05-07
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Career Pitching Statistics

Masahide Kobayashi — Career Pitching Statistics
W L G GS CG SHO SV IP H ER HR BB SO ERA Pitcher PIV
4 5 67 0 0 0 6 65.1 77 37 10 18 39 5.10 -316.4

Career ERA 5.10 vs. league average 4.32 across their career seasons — 17.9% worse than league average.

Season-by-Season Pitching

Pitching Career Arc

Click a stat to plot it across every season.

Masahide Kobayashi — Season-by-Season Pitching
Year Team Lg W L G GS CG SHO SV IP H ER BB SO ERA Lg ERA Pitcher PIV
2008 CLE AL 4 5 57 0 0 0 6 55.2 65 28 14 35 4.53 4.32 (-5%) -316.4
2009 CLE AL 0 0 10 0 0 0 0 9.2 12 9 4 4 8.38 4.32 (-94%) 0.0
Career · 2 seasons 4 5 67 0 0 0 6 65.1 77 37 18 39 5.10 — -316

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

Masahide Kobayashi — Career Batting Statistics
G AB R H 2B 3B HR RBI SB BB SO AVG OBP SLG OPS PIV
67 0 0 0 0 0 0 0 0 0 0 .000 .000 .000 .000 0

Season-by-Season Batting

Career Arc

Click a stat to plot it across every season.

Masahide Kobayashi — 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
2008 CLE AL 57 0 0 0 0 0 0 0 0 0 0 .000 — — — — 0.0
2009 CLE AL 10 0 0 0 0 0 0 0 0 0 0 .000 — — — — 0.0
Career · 2 seasons 67 0 0 0 0 0 0 0 0 0 0 — — — — — 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 (134 games) →

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

Batting — Home / Away

Masahide Kobayashi — Batting — Home / Away
SplitGABRHHRRBIAVG
Home3700000—
Away3000000—

Pitching — Home / Away

Masahide Kobayashi — Pitching — Home / Away
SplitGIPHERBBSOERA
Home3737.1441411253.38
Away3028.033237147.39

Last 10 Games — Pitching

Masahide Kobayashi — Last 10 Games — Pitching
DateTmOppDecIPHRERBBSOHR
2009-05-07 CLEBOS — 0.0555000
2009-05-05 CLETOR — 1.0000010
2009-05-03 CLEDET — 1.0000020
2009-04-25 CLEMIN — 1.0222012
2009-04-21 CLEKCR — 0.0211000
2009-04-18 CLENYY — 2.0000000
2009-04-13 CLEKCR — 1.1000000
2009-04-10 CLETOR — 1.1211300
2009-04-09 CLETEX — 1.0000100
2009-04-06 CLETEX — 1.0100000

Fielding Statistics

Career Fielding Totals by Position

Masahide Kobayashi — Career Fielding Totals by Position
Position G GS PO A E DP
P 67 0 9 5 0 1

Season-by-Season Fielding

Masahide Kobayashi — Season-by-Season Fielding
Year Team Pos G GS PO A E DP
2008 CLE P 57 0 8 3 0 0
2009 CLE P 10 0 1 2 0 1

Career Games by Position

Position Diamond

Circle size = games played at each position.

Masahide Kobayashi — Career Games by Position
Position Games
Pitcher 67

Salary History

Masahide Kobayashi — Salary History
Year Team League Salary
2009 CLE AL $3,000,000
2008 CLE AL $3,000,000
Total Career Earnings $6,000,000

Masahide Kobayashi: the record in brief

According to the bio, Masahide Kobayashi debuted on April 2, 2008 and played a final game on May 7, 2009. The team column never changes: it is the Cleveland Indians from 2008 to 2009. The bio lists Kobayashi as a pitcher who threw and hit right-handed. Kobayashi is listed at 195 pounds on a 6-foot-0 frame. Kobayashi was born on May 24, 1974, in Yamanashi, Yamanashi, Japan.

Kobayashi's career pitching line is 4 wins, 5 losses and a 5.10 ERA over 67 appearances. Kobayashi had 39 strikeouts. The league ERA over Kobayashi's seasons was 4.32, so the 5.10 figure ran 17.9% worse than average. Among the heaviest workloads, the lowest ERA was 4.53 in 2008, when the league's was 4.32.

The salary table's largest figure is $3,000,000 in 2008, and the listed salaries total $6,000,000. Retrosheet box scores cover 134 of Kobayashi's games, and the full game log is linked from the splits section.

The position breakdown shows 67 games, all at pitcher. Fielding on the mound produced 9 putouts and 5 assists against 0 errors.

Frequently Asked Questions about Masahide Kobayashi

What years did Masahide Kobayashi play?
Masahide Kobayashi played in Major League Baseball from 2008 to 2009.
Was Masahide Kobayashi a pitcher?
Yes. Masahide Kobayashi pitched in the major leagues, recording 4 wins and 39 strikeouts.
What was Masahide Kobayashi's career ERA?
Masahide Kobayashi finished with a 5.10 career ERA, going 4-5 with 39 strikeouts.
How many strikeouts did Masahide Kobayashi have?
Masahide Kobayashi recorded 39 career strikeouts.
Is Masahide Kobayashi in the Hall of Fame?
No. Masahide Kobayashi has not been inducted into the National Baseball Hall of Fame.
What teams did Masahide Kobayashi play for?
Masahide Kobayashi played for the Cleveland Guardians.