Jailen Peguero

Pitcher · Career Stats, Bio & Records (2007-2008)

Jailen Peguero was a pitcher who played in Major League Baseball from 2007 to 2008 for the Arizona Diamondbacks, a span of 2 seasons. Across 25 career appearances, he went 1-0 with a 7.50 ERA and 14 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 1–0
ERA 7.50
WHIP 1.79
SO 14
Pitcher PIV -797.7
Position
Pitcher
Bats / Throws
R / R
Height / Weight
6'0" / 185 lb
Born
1/4/1981 in Azua, Azua, D.R.
MLB Debut
2007-06-08
Last Game
2008-09-25

Full name: Jailen Alphonso Peguero

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Career Pitching Statistics

Jailen Peguero — Career Pitching Statistics
W L G GS CG SHO SV IP H ER HR BB SO ERA Pitcher PIV
1 0 25 0 0 0 0 24.0 26 20 2 17 14 7.50 -797.7

Career ERA 7.50 vs. league average 4.40 across their career seasons — 70.5% worse than league average.

Season-by-Season Pitching

Pitching Career Arc

Click a stat to plot it across every season.

Jailen Peguero — Season-by-Season Pitching
Year Team Lg W L G GS CG SHO SV IP H ER BB SO ERA Lg ERA Pitcher PIV
2007 ARI NL 1 0 18 0 0 0 0 14.2 17 15 13 9 9.20 4.47 (-106%) -797.7
2008 ARI NL 0 0 7 0 0 0 0 9.1 9 5 4 5 4.82 4.32 (-12%) 0.0
Career · 2 seasons 1 0 25 0 0 0 0 24.0 26 20 17 14 7.50 — -798

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

Jailen Peguero — Career Batting Statistics
G AB R H 2B 3B HR RBI SB BB SO AVG OBP SLG OPS PIV
25 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.

Jailen Peguero — 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
2007 ARI NL 18 0 0 0 0 0 0 0 0 0 0 .000 — — — — 0.0
2008 ARI NL 7 0 0 0 0 0 0 0 0 0 0 .000 — — — — 0.0
Career · 2 seasons 25 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 (50 games) →

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

Batting — Home / Away

Jailen Peguero — Batting — Home / Away
SplitGABRHHRRBIAVG
Home1500000—
Away1000000—

Pitching — Home / Away

Jailen Peguero — Pitching — Home / Away
SplitGIPHERBBSOERA
Home1514.01389105.14
Away1010.013128410.80

Last 10 Games — Pitching

Jailen Peguero — Last 10 Games — Pitching
DateTmOppDecIPHRERBBSOHR
2008-09-25 AZSTL — 1.0221110
2008-09-08 AZSFG — 1.0211010
2008-09-05 AZLAD — 2.0111200
2008-09-02 AZSTL — 1.0100100
2008-09-01 AZSTL — 1.1000000
2008-04-13 AZCOL — 2.0322020
2008-04-12 AZCOL — 1.0000010
2007-09-29 AZCOL — 1.2355210
2007-09-23 AZLAD — 0.2011200
2007-09-14 AZLAD — 0.1000000

Fielding Statistics

Career Fielding Totals by Position

Jailen Peguero — Career Fielding Totals by Position
Position G GS PO A E DP
P 25 0 0 6 0 1

Season-by-Season Fielding

Jailen Peguero — Season-by-Season Fielding
Year Team Pos G GS PO A E DP
2007 ARI P 18 0 0 3 0 0
2008 ARI P 7 0 0 3 0 1

Career Games by Position

Position Diamond

Circle size = games played at each position.

Jailen Peguero — Career Games by Position
Position Games
Pitcher 25

Jailen Peguero: the record in brief

June 8, 2007 and September 25, 2008 bracket Jailen Peguero's time in the majors: the debut and the last game on record. All of the seasons listed were played for the Arizona Diamondbacks. Peguero played primarily as a pitcher and threw and hit right-handed. The bio adds a birth date on January 4, 1981, in Azua, Azua, D.R. and a listed size of 185 pounds on a 6-foot-0 frame. Peguero's full given name, per the bio, is Jailen Alphonso Peguero.

Peguero pitched in 25 games, starting 0, and finished with a 1-0 record and 7.50 ERA. Also on Peguero's record: 14 strikeouts. The league ERA over Peguero's seasons was 4.40, so the 7.50 figure ran 70.5% worse than average. In 2008, one of the busiest seasons, Peguero posted a 4.82 ERA; the league figure that year was 4.32.

Every defensive appearance on record for Peguero, 25 games, came at pitcher. On the mound, the fielding record shows 0 errors alongside 0 putouts and 6 assists.

Retrosheet box scores cover 50 of Peguero's games, and the full game log is linked from the splits section.

Frequently Asked Questions about Jailen Peguero

What years did Jailen Peguero play?
Jailen Peguero played in Major League Baseball from 2007 to 2008.
Was Jailen Peguero a pitcher?
Yes. Jailen Peguero pitched in the major leagues, recording 1 wins and 14 strikeouts.
What teams did Jailen Peguero play for?
Jailen Peguero played for one team, the Arizona Diamondbacks (2007–2008).
What were Jailen Peguero's career stats?
In 25 games, Jailen Peguero went 1-0 with a 7.50 ERA, 14 strikeouts, and 24.0 innings pitched.
What position did Jailen Peguero play?
Jailen Peguero played primarily as a pitcher, the position where he appeared in the most games.
How tall was Jailen Peguero and how much did he weigh?
Jailen Peguero was listed at 6 feet and 185 pounds.
What was Jailen Peguero's career ERA?
Jailen Peguero finished with a 7.50 career ERA, going 1-0 with 14 strikeouts.
How many strikeouts did Jailen Peguero have?
Jailen Peguero recorded 14 career strikeouts.
Is Jailen Peguero in the Hall of Fame?
No. Jailen Peguero has not been inducted into the National Baseball Hall of Fame.