Christian Koss
Second Baseman · Career Stats, Bio & Records (2025-2026)
Christian Koss is a second baseman who has played in Major League Baseball since 2025 for the San Francisco Giants, a span of 2 seasons. In 147 career games, he has hit .239 with 90 hits, 7 home runs, and 35 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
PIV is computed through the 2025 season, so it does not yet include 2026. Every other career total on this page includes 2026 through October 25, 2026.
- Position
- Second Baseman
- Bats / Throws
- R / R
- Height / Weight
- 6'1" / 186 lb
- MLB Debut
- 2025-04-01
- Jersey
- #50
Career Batting Statistics
| G | AB | R | H | 2B | 3B | HR | RBI | SB | BB | SO | AVG | OBP | SLG | OPS | PIV |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 147 | 377 | 52 | 90 | 15 | 0 | 7 | 35 | 9 | 18 | 104 | .239 | .281 | .334 | .615 | -171 |
Career AVG .239 vs. league average .245 across their career seasons — near league average.
Career OBP .281 vs. league average .317 across their career seasons — 11.3% below league average.
Career SLG .334 vs. league average .402 across their career seasons — 16.9% below league average.
Career OPS .615 vs. league average .719 across their career seasons — 14.4% below league average.
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025 | SFN | NL | 76 | 174 | 25 | 46 | 9 | 0 | 3 | 23 | 4 | 9 | 45 | .264 | .245 (+8%) | .315 (-2%) | .403 (-9%) | .718 (-6%) | -171.3 |
| 2026 | SF | NL | 71 | 203 | 27 | 44 | 6 | 0 | 4 | 12 | 5 | 9 | 59 | .217 | .243 (-11%) | .318 (-19%) | .400 (-24%) | .718 (-22%) | 0 |
| Career · 2 seasons | 147 | 377 | 52 | 90 | 15 | 0 | 7 | 35 | 9 | 18 | 104 | .239 | — | — | — | — | -171 | ||
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 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025 | SFN | NL | 0 | 0 | 4 | 0 | 0 | 0 | 0 | 4.0 | 4 | 0 | 0 | 0 | 0.00 | — | 0.0 |
| 2026 | SF | NL | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 2.0 | 5 | 3 | 0 | 0 | 13.50 | — | - |
| Career · 2 seasons | 0 | 0 | 6 | 0 | 0 | 0 | 0 | 6.0 | 9 | 3 | 0 | 0 | 4.50 | — | 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 (80 games) →Per-game data from Retrosheet (regular season, through 2025).
Batting — Home / Away
| Split | G | AB | R | H | HR | RBI | AVG |
|---|---|---|---|---|---|---|---|
| Home | 41 | 84 | 15 | 26 | 2 | 17 | .310 |
| Away | 35 | 90 | 10 | 20 | 1 | 6 | .222 |
Pitching — Home / Away
| Split | G | IP | H | ER | BB | SO | ERA |
|---|---|---|---|---|---|---|---|
| Home | 4 | 4.0 | 4 | 0 | 0 | 0 | 0.00 |
Last 10 Games — Batting
| Date | Tm | Opp | Res | AB | R | H | 2B | 3B | HR | RBI | BB | SO |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025-09-28 | SFG | COL | W | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| 2025-09-24 | SFG | STL | W | 3 | 2 | 1 | 0 | 0 | 0 | 0 | 1 | 0 |
| 2025-09-23 | SFG | STL | L | 3 | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 0 |
| 2025-09-22 | SFG | STL | L | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2025-09-21 | SFG | LAD | W | 4 | 1 | 2 | 1 | 0 | 0 | 0 | 0 | 2 |
| 2025-09-19 | SFG | LAD | L | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2025-09-18 | SFG | LAD | L | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| 2025-09-17 | SFG | AZ | W | 4 | 1 | 1 | 1 | 0 | 0 | 2 | 0 | 0 |
| 2025-09-12 | SFG | LAD | W | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2025-09-08 | SFG | AZ | W | 4 | 1 | 2 | 1 | 0 | 0 | 2 | 0 | 0 |
Last 4 Games — Pitching
| Date | Tm | Opp | Dec | IP | H | R | ER | BB | SO | HR |
|---|---|---|---|---|---|---|---|---|---|---|
| 2025-08-30 | SFG | BAL | — | 1.0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2025-08-13 | SFG | SDP | — | 1.0 | 2 | 0 | 0 | 0 | 0 | 0 |
| 2025-08-10 | SFG | WAS | — | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 |
| 2025-04-22 | SFG | MIL | — | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 |
Career Games by Position
Circle size = games played at each position.
| Position | Games |
|---|---|
| Pitcher | 4 |
| Second Base | 46 |
| Third Base | 13 |
| Shortstop | 7 |
| Designated Hitter | 3 |
Christian Koss: the record in brief
Christian Koss's major league record starts with the debut on April 1, 2025 and remains open, because the career is ongoing. Koss spent the whole of the career shown here with one club, the San Francisco Giants. Listed as a second baseman, Koss both batted and threw right-handed. Koss is listed at 186 pounds on a 6-foot-1 frame. The birth record reads January 27, 1998, in Riverside, CA, USA.
The batting record for Koss: 147 games, 90 hits in 377 at bats, and a .239 average, plus 7 home runs and 35 runs batted in. Reaching base at a .281 clip and slugging .334, Koss carries a .615 OPS. The .239 career average is close to the .245 the league hit across the same seasons. By OPS the gap is 14.4% below league average (.615 against .719). 2025 produced Koss's most hits, 46 of them for the San Francisco Giants. Koss drove in a season-high 23 runs in 2025. 2025 was the strongest of the full seasons by average: .264 against a league .245, an 8% edge.
Frequently Asked Questions about Christian Koss
- What years did Christian Koss play?
- Christian Koss played in Major League Baseball from 2025 to 2026.
- Was Christian Koss a pitcher?
- No. Christian Koss was a position player (Second Baseman), though he did pitch in 6 career games.
- How many home runs did Christian Koss hit?
- Christian Koss hit 7 career home runs with 90 hits.
- What teams has Christian Koss played for?
- Christian Koss has played for one team, the San Francisco Giants (2025–2026).
- What are Christian Koss's career stats?
- In 147 games, Christian Koss has 90 hits, 7 home runs, 35 RBI, 52 runs, and 9 stolen bases, with a .239 batting average.
- What position does Christian Koss play?
- Christian Koss plays primarily as a second baseman, the position where he has appeared in the most games.
- How tall is Christian Koss and how much does he weigh?
- Christian Koss is listed at 6 feet 1 inch and 186 pounds.
- What number does Christian Koss wear?
- Christian Koss wears number 50, according to MLB's 2026 roster data.
- How many home runs has Christian Koss hit each season?
- Christian Koss's home runs by season: 3 in 2025 and 4 in 2026. His most in one season was 4, in 2026.
- What was Christian Koss's career batting average?
- Christian Koss batted .239 over his career, with 90 hits in 377 at bats.
- How many RBI did Christian Koss have?
- Christian Koss drove in 35 runs in his career.
- What was Christian Koss's career ERA?
- Christian Koss finished with a 4.50 career ERA, going 0-0 with 0 strikeouts.