Shawn Armstrong

Pitcher · Career Stats, Bio & Records (2015-2026)

Shawn Armstrong is a pitcher who has played in Major League Baseball since 2015 for 8 teams, including the Cleveland Guardians, a span of 12 seasons. Across 411 career appearances, he has gone 17-12 with a 3.88 ERA and 468 strikeouts. His career Pitcher PIV — Baseball Data Hub's era-adjusted measure of pitching impact — is 5192.2.

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

Active Player
W–L 17–12
ERA 3.88
WHIP 1.24
SO 468
Pitcher PIV thru 2025 5192.2
Position
Pitcher
Bats / Throws
R / R
Height / Weight
6'2" / 225 lb
Born
9/11/1990 in New Bern, NC, USA
MLB Debut
2015-08-08
Jersey
#43

Full name: Shawn Michael Armstrong

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Career Pitching Statistics

Shawn Armstrong — Career Pitching Statistics
W L G GS CG SHO SV IP H ER HR BB SO ERA Pitcher PIV
17 12 411 18 0 0 17 456.2 409 197 51 159 468 3.88 5192.2

Career ERA 3.88 vs. league average 4.20 across their career seasons — 7.6% better than league average.

Season-by-Season Pitching

Pitching Career Arc

Click a stat to plot it across every season.

Shawn Armstrong Stats, Bio & Career Records
Year Team Lg W L G GS CG SHO SV IP H ER BB SO ERA Lg ERA Pitcher PIV
2015 CLE AL 0 0 8 0 0 0 0 8.0 5 2 2 11 2.25 — 0.0
2016 CLE AL 0 0 10 0 0 0 0 10.2 9 3 5 7 2.53 4.19 (+40%) -71.8
2017 CLE AL 1 0 21 0 0 0 0 24.2 23 12 10 20 4.38 4.36 (avg) -709.8
2018 SEA AL 0 1 14 0 0 0 1 14.2 9 2 3 15 1.23 4.15 (+70%) 338.4
2019 SEA AL 0 1 4 0 0 0 0 3.2 8 6 3 3 14.73 — 0.0
2019 BAL AL 1 0 51 0 0 0 4 54.1 58 31 26 60 5.13 4.51 (-14%) 306.9
2020 BAL AL 2 0 14 0 0 0 0 15.0 9 3 3 14 1.80 4.45 (+60%) 549.9
2021 BAL AL 0 0 20 0 0 0 0 20.0 28 19 10 22 8.55 4.27 (-100%) -802.2
2021 TBA AL 1 0 11 0 0 0 0 16.0 11 8 5 22 4.50 4.27 (-5%) -536.8
2022 MIA NL 0 0 7 0 0 0 0 6.2 10 8 3 5 10.80 — 0.0
2022 TBA AL 2 3 43 3 0 0 2 55.0 56 22 14 61 3.60 3.97 (+9%) 937.4
2023 TBA AL 1 0 39 6 0 0 0 52.0 36 8 11 54 1.38 4.33 (+68%) 2349.6
2024 TBA AL 2 2 38 7 0 0 1 46.2 56 28 19 50 5.40 4.08 (-32%) 367.0
2024 SLN NL 1 0 11 0 0 0 0 12.2 11 4 2 12 2.84 4.08 (+30%) 414.8
2024 CHN NL 0 1 8 0 0 0 0 7.1 10 4 4 4 4.91 — 0.0
2025 TEX AL 4 3 71 2 0 0 9 74.0 40 19 20 74 2.31 4.16 (+44%) 2048.9
2026 CLE AL 2 1 41 0 0 0 0 35.1 30 18 19 34 4.58 4.18 (-10%) -
Career · 17 seasons 17 12 411 18 0 0 17 456.2 409 197 159 468 3.88 — 5,192

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

Shawn Armstrong — Career Batting Statistics
G AB R H 2B 3B HR RBI SB BB SO AVG OBP SLG OPS PIV
370 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.

Shawn Armstrong 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
2015 CLE AL 8 0 0 0 0 0 0 0 0 0 0 .000 — — — — 0.0
2016 CLE AL 10 0 0 0 0 0 0 0 0 0 0 .000 — — — — 0.0
2017 CLE AL 21 0 0 0 0 0 0 0 0 0 0 .000 — — — — 0.0
2018 SEA AL 14 0 0 0 0 0 0 0 0 0 0 .000 — — — — 0.0
2019 SEA AL 4 0 0 0 0 0 0 0 0 0 0 .000 — — — — 0.0
2019 BAL AL 51 0 0 0 0 0 0 0 0 0 0 .000 — — — — 0.0
2020 BAL AL 14 0 0 0 0 0 0 0 0 0 0 .000 — — — — 0.0
2021 BAL AL 20 0 0 0 0 0 0 0 0 0 0 .000 — — — — 0.0
2021 TBA AL 11 0 0 0 0 0 0 0 0 0 0 .000 — — — — 0.0
2022 MIA NL 7 0 0 0 0 0 0 0 0 0 0 .000 — — — — 0.0
2022 TBA AL 43 0 0 0 0 0 0 0 0 0 0 .000 — — — — 0.0
2023 TBA AL 39 0 0 0 0 0 0 0 0 0 0 .000 — — — — 0.0
2024 TBA AL 38 0 0 0 0 0 0 0 0 0 0 .000 — — — — 0.0
2024 SLN NL 11 0 0 0 0 0 0 0 0 0 0 .000 — — — — 0.0
2024 CHN NL 8 0 0 0 0 0 0 0 0 0 0 .000 — — — — 0.0
2025 TEX AL 71 0 0 0 0 0 0 0 0 0 0 .000 — — — — 0.0
Career · 16 seasons 370 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.

Postseason Statistics

Playoff Career Batting

Shawn Armstrong — Playoff Career Batting
G AB R H 2B 3B HR RBI BB SO AVG
2 0 0 0 0 0 0 0 0 0 .000

Playoff Batting by Year

Shawn Armstrong — Playoff Batting by Year
Year Round Team G AB R H 2B 3B HR RBI BB SO AVG
2023 ALWC1 TBA 1 0 0 0 0 0 0 0 0 0 .000
2022 ALWC1 TBA 1 0 0 0 0 0 0 0 0 0 .000

Playoff Career Pitching

Shawn Armstrong — Playoff Career Pitching
W L G GS SV IP H ER BB SO ERA
0 0 2 0 0 2.1 2 0 0 4 0.00

Playoff Pitching by Year

Shawn Armstrong — Playoff Pitching by Year
Year Round Team W L G GS SV IP H ER BB SO ERA
2023 ALWC1 TBA 0 0 1 0 0 1.0 1 0 0 1 0.00
2022 ALWC1 TBA 0 0 1 0 0 1.1 1 0 0 3 0.00

Game Log & Splits

View full game log (740 games) →

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

Batting — Home / Away

Shawn Armstrong — Batting — Home / Away
SplitGABRHHRRBIAVG
Home19300000—
Away17700000—

Pitching — Home / Away

Shawn Armstrong — Pitching — Home / Away
SplitGIPHERBBSOERA
Home193223.219893692353.74
Away177197.218186711993.92

Last 10 Games — Pitching

Shawn Armstrong — Last 10 Games — Pitching
DateTmOppDecIPHRERBBSOHR
2025-09-27 TEXCLE — 1.0000100
2025-09-26 TEXCLE — 1.0000000
2025-09-24 TEXMIN — 1.0211010
2025-09-21 TEXMIA — 0.2100010
2025-09-19 TEXMIA — 1.0000000
2025-09-17 TEXHOU — 1.2000020
2025-09-14 TEXNYN — 1.0100020
2025-09-13 TEXNYN SV 0.2100020
2025-09-10 TEXMIL — 1.1000120
2025-09-09 TEXMIL SV 1.0211001

Fielding Statistics

Career Fielding Totals by Position

Shawn Armstrong — Career Fielding Totals by Position
Position G GS PO A E DP
P 370 17 7 28 2 1

Season-by-Season Fielding

Shawn Armstrong — Season-by-Season Fielding
Year Team Pos G GS PO A E DP
2015 CLE P 8 0 0 0 0 0
2016 CLE P 10 0 1 1 0 0
2017 CLE P 21 0 1 2 0 0
2018 SEA P 14 0 0 4 0 0
2019 SEA P 4 0 0 0 0 0
2019 BAL P 51 0 1 2 0 0
2020 BAL P 14 0 0 0 1 0
2021 BAL P 20 0 0 3 0 0
2021 TBA P 11 0 0 0 1 0
2022 MIA P 7 0 0 0 0 0
2022 TBA P 43 2 0 5 0 0
2023 TBA P 39 6 2 4 0 0
2024 TBA P 38 7 0 3 0 0
2024 SLN P 11 0 0 0 0 0
2024 CHN P 8 0 0 1 0 1
2025 TEX P 71 2 2 3 0 0

Career Games by Position

Position Diamond

Circle size = games played at each position.

Shawn Armstrong Stats, Bio & Career Records
Position Games
Pitcher 370

Most Similar Players

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

  1. 98
    John Brebbia
    16-22, 4.12 ERA
  2. 88
    Hoby Milner
    14-9, 3.80 ERA
  3. 87
    Fernando Salas
    25-28, 3.91 ERA
  4. 82
    Blake Parker
    16-11, 3.47 ERA
  5. 79
    Shawn Kelley
    32-25, 3.80 ERA
  6. 76
    Phil Maton
    23-21, 4.10 ERA

Shawn Armstrong: the record in brief

Shawn Armstrong made a major league debut on August 8, 2015 and is still active, so the totals on this page keep changing. Armstrong played for the Cleveland Indians (2015 to 2017), the Seattle Mariners (2018 through 2019), the Baltimore Orioles (2019 through 2021), the Tampa Bay Rays (2021 through 2024), the Miami Marlins (2022), the St. Louis Cardinals (2024), the Chicago Cubs (2024), and the Texas Rangers (2025). Armstrong is listed as a pitcher at 6-foot-2 and 225 pounds. The bio says Armstrong threw and hit right-handed. The recorded birth is September 11, 1990, in New Bern, NC, USA. Armstrong's full given name, per the bio, is Shawn Michael Armstrong.

Armstrong has gone 17-12 with a 3.88 ERA in 411 games, 18 of them starts. Also on Armstrong's record: 468 strikeouts and 17 saves. That 3.88 ERA compares with a 4.20 league average across the same seasons, 7.6% better. 2023 was Armstrong's sharpest full season, a 1.38 ERA against the league's 4.33. Pitcher PIV, the site's era-adjusted run-prevention measure, totals 5,192.2 for Armstrong's career.

Every defensive appearance on record for Armstrong, 370 games, came at pitcher. On the mound, the fielding record shows 2 errors alongside 7 putouts and 28 assists.

Armstrong made 2 postseason pitching appearances, with a 0-0 record and 0.00 ERA. Those appearances came in 2022 and 2023.

Frequently Asked Questions about Shawn Armstrong

What years did Shawn Armstrong play?
Shawn Armstrong played in Major League Baseball from 2015 to 2026.
Was Shawn Armstrong a pitcher?
Yes. Shawn Armstrong pitched in the major leagues, recording 17 wins and 468 strikeouts.
What teams has Shawn Armstrong played for?
Shawn Armstrong has played for 8 teams: the Cleveland Guardians (2015–2017, 2026), the Seattle Mariners (2018–2019), the Baltimore Orioles (2019–2021), the Tampa Bay Rays (2021–2024), the Miami Marlins (2022), the St. Louis Cardinals (2024), the Chicago Cubs (2024), and the Texas Rangers (2025).
What are Shawn Armstrong's career stats?
In 411 games, Shawn Armstrong has gone 17-12 with a 3.88 ERA, 468 strikeouts, 456.2 innings pitched, and 17 saves.
What position does Shawn Armstrong play?
Shawn Armstrong plays primarily as a pitcher, the position where he has appeared in the most games.
How tall is Shawn Armstrong and how much does he weigh?
Shawn Armstrong is listed at 6 feet 2 inches and 225 pounds.
What number does Shawn Armstrong wear?
Shawn Armstrong wears number 43, according to MLB's 2026 roster data.
What was Shawn Armstrong's career ERA?
Shawn Armstrong finished with a 3.88 career ERA, going 17-12 with 468 strikeouts.
How many strikeouts did Shawn Armstrong have?
Shawn Armstrong recorded 468 career strikeouts.