James McArthur
Pitcher · Career Stats, Bio & Records (2023-2024)
James McArthur is a pitcher who has played in Major League Baseball since 2023 for the Kansas City Royals, a span of 2 seasons. Across 75 career appearances, he has gone 6-7 with a 4.84 ERA, 72 strikeouts, and 22 saves. His career Pitcher PIV — Baseball Data Hub's era-adjusted measure of pitching impact — is 773.8.
- 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
- Position
- Pitcher
- Bats / Throws
- R / R
- Height / Weight
- 6'7" / 230 lb
- MLB Debut
- 2023-06-28
- Jersey
- #66
Full name: James Leonard McArthur
Season-by-Season Pitching
Click a stat to plot it across every season.
| Year | Team | Lg | W | L | G | GS | CG | SHO | SV | IP | H | ER | BB | SO | ERA | Lg ERA | Pitcher PIV |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | KCA | AL | 1 | 0 | 18 | 2 | 0 | 0 | 4 | 23.1 | 20 | 12 | 2 | 23 | 4.63 | 4.33 (-7%) | 907.4 |
| 2024 | KCA | AL | 5 | 7 | 57 | 0 | 0 | 0 | 18 | 56.2 | 68 | 31 | 14 | 49 | 4.92 | 4.08 (-21%) | -133.6 |
| Career · 2 seasons | 6 | 7 | 75 | 2 | 0 | 0 | 22 | 80.0 | 88 | 43 | 16 | 72 | 4.84 | — | 774 | ||
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.
Season-by-Season Batting
Click a stat to plot it across every season.
| Year | Team | Lg | G | AB | R | H | 2B | 3B | HR | RBI | SB | BB | SO | AVG | Lg AVG | Lg OBP | Lg SLG | Lg OPS | PIV |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | KCA | AL | 18 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .000 | — | — | — | — | 0.0 |
| 2024 | KCA | AL | 57 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .000 | — | — | — | — | 0.0 |
| Career · 2 seasons | 75 | 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 (150 games) →Per-game data from Retrosheet (regular season, through 2025).
Batting — Home / Away
| Split | G | AB | R | H | HR | RBI | AVG |
|---|---|---|---|---|---|---|---|
| Home | 44 | 0 | 0 | 0 | 0 | 0 | — |
| Away | 31 | 0 | 0 | 0 | 0 | 0 | — |
Pitching — Home / Away
| Split | G | IP | H | ER | BB | SO | ERA |
|---|---|---|---|---|---|---|---|
| Home | 44 | 46.1 | 55 | 30 | 10 | 44 | 5.83 |
| Away | 31 | 33.2 | 33 | 13 | 6 | 28 | 3.48 |
Last 10 Games — Pitching
| Date | Tm | Opp | Dec | IP | H | R | ER | BB | SO | HR |
|---|---|---|---|---|---|---|---|---|---|---|
| 2024-09-16 | KCR | DET | — | 0.2 | 0 | 0 | 0 | 1 | 1 | 0 |
| 2024-09-14 | KCR | PIT | — | 0.1 | 2 | 0 | 0 | 1 | 0 | 0 |
| 2024-09-09 | KCR | NYY | L | 0.0 | 3 | 4 | 4 | 1 | 0 | 1 |
| 2024-09-06 | KCR | MIN | — | 1.0 | 0 | 0 | 0 | 0 | 2 | 0 |
| 2024-09-03 | KCR | CLE | — | 0.1 | 1 | 0 | 0 | 1 | 1 | 0 |
| 2024-08-30 | KCR | HOU | L | 0.2 | 2 | 1 | 1 | 0 | 0 | 0 |
| 2024-08-27 | KCR | CLE | W | 2.0 | 0 | 0 | 0 | 0 | 4 | 0 |
| 2024-08-26 | KCR | CLE | — | 1.0 | 0 | 0 | 0 | 1 | 1 | 0 |
| 2024-08-23 | KCR | PHI | — | 1.0 | 1 | 0 | 0 | 0 | 1 | 0 |
| 2024-08-20 | KCR | LAA | — | 1.0 | 3 | 0 | 0 | 0 | 1 | 0 |
Career Games by Position
Circle size = games played at each position.
| Position | Games |
|---|---|
| Pitcher | 75 |
James McArthur: the record in brief
Active since a debut on June 28, 2023, James McArthur has a record on this page that is still being added to. McArthur spent the whole of the career shown here with one club, the Kansas City Royals. Listed as a pitcher, McArthur threw and hit right-handed. McArthur is listed at 6'7" and 230 pounds. The birth record reads December 11, 1996, in New Braunfels, TX, USA. McArthur's full given name, per the bio, is James Leonard McArthur.
The pitching table credits McArthur with a 6-7 record and a 4.84 ERA in 75 games. The totals include 72 strikeouts and 22 saves. The league ERA over McArthur's seasons was 4.21, so the 4.84 figure ran 15.0% worse than average. McArthur won 5 games in 2024, the most of any season listed. The most saves in one season was 18, in 2024. In 2024, one of the busiest seasons, McArthur posted a 4.92 ERA; the league figure that year was 4.08. By Pitcher PIV, Baseball Data Hub's measure of run prevention relative to each season's league, McArthur's career adds up to 773.8.
Every defensive appearance on record for McArthur, 75 games, came at pitcher. The fielding table credits McArthur with 6 putouts, 13 assists and 1 errors on the mound.
The game-log section draws on 150 games of Retrosheet box scores for McArthur.
Frequently Asked Questions about James McArthur
- What years did James McArthur play?
- James McArthur played in Major League Baseball from 2023 to 2024.
- Was James McArthur a pitcher?
- Yes. James McArthur pitched in the major leagues, recording 6 wins and 72 strikeouts.
- What teams has James McArthur played for?
- James McArthur has played for one team, the Kansas City Royals (2023–2024).
- What are James McArthur's career stats?
- In 75 games, James McArthur has gone 6-7 with a 4.84 ERA, 72 strikeouts, 80.0 innings pitched, and 22 saves.
- What position does James McArthur play?
- James McArthur plays primarily as a pitcher, the position where he has appeared in the most games.
- How tall is James McArthur and how much does he weigh?
- James McArthur is listed at 6 feet 7 inches and 230 pounds.
- What number does James McArthur wear?
- James McArthur wears number 66, according to MLB's 2026 roster data.
- What was James McArthur's career ERA?
- James McArthur finished with a 4.84 career ERA, going 6-7 with 72 strikeouts.
- How many strikeouts did James McArthur have?
- James McArthur recorded 72 career strikeouts.