This player is no longer an active prospect. They have either graduated to the majors or moved out of the prospect pipeline. Their Bowman cards are still tracked.
Christian Koss Bowman Card Prices & Value
Track Bowman 1st Chrome autograph and rookie card values for this 28-year-old SF SS: raw and PSA 10 graded price trends, recent sales, and market data. Current season: AVG .217, HR 4.
Market data
Price history, recent sales, active listings and parallel pricing for Christian Koss are part of Premium. Already a member? Sign in.
Stats
| Year | Level | AVG | HR | RBI | OPS | OBP | SLG | SB | AB |
|---|---|---|---|---|---|---|---|---|---|
| 2026 | AAA | 0.444 | 1 | 3 | 1.278 | 0.500 | 0.778 | 1 | 9 |
| 2026 | MLB | 0.217 | 4 | 12 | 0.562 | 0.257 | 0.305 | 5 | 203 |
| 2026 | ROK | 0.389 | 1 | 7 | 0.977 | 0.421 | 0.556 | 1 | 18 |
| 2025 | AAA | 0.296 | 1 | 5 | 0.778 | 0.296 | 0.481 | 0 | 27 |
| 2025 | MLB | 0.264 | 3 | 23 | 0.676 | 0.309 | 0.368 | 4 | 174 |
| 2025 | ROK | 0.667 | 0 | 1 | 1.333 | 0.667 | 0.667 | 0 | 3 |
Christian Koss: Common Questions
Does Christian Koss have a 1st Bowman autograph, and which set is it in?
Yes. Christian Koss's first Bowman autograph is in 2020 Bowman Chrome, card CPA-CK. Until an MLB debut, that 1st auto is the closest thing to a Christian Koss rookie card.
What are Christian Koss's position, team, and age?
Christian Koss is a SS in the SF organization, currently 28 years old. This season's line: AVG .217, HR 4.
How is Christian Koss ranked among MLB prospects?
Christian Koss is not currently inside our ranked prospect list.
How often does Christian Koss's Bowman auto grade a PSA 10?
Across graded copies, Christian Koss's base Bowman autograph hits a PSA 10 roughly 53% of the time (85 graded so far).
What is Christian Koss's 1st Bowman auto worth, and where can I track the price?
Raw and PSA 10 sale prices, price history, and the HobbyMonitor value score for Christian Koss update daily on this page for HobbyMonitor members.