Happy birthday Courtney Thorne-Smith!New Drop just released! Bitter Taste Autographed at Books-A-MillionWelcoming Umberto Sciuto to ISO!brandnmendes left ★★★★★ feedback for tagruato: “Met in person and had a smooth transaction.…”Welcoming Tenks Chabashira to ISO!HOT right now: When You Least Expect It AutographedIn2flicks Autographs holds the crown for Narnia: The Magician's Nephew — Cast on Graphmasters!New Drop just released! An Ending In Itself LP (Opened & Signed) at Newbury ComicsDonnie left ★★★★★ feedback for Vdecostello: “A+++++++ authentic fast shipping amazing com…”Thundergodtom left ★★★★★ feedback for CRM_Memorabilia_UK: “They were great with communication and were…”In2flicks Autographs holds the crown for Enola Holmes 2 — Cast on Graphmasters!Happy birthday Emily Bader!In2flicks Autographs holds the crown for Maleficent — Cast on Graphmasters!New Drop just released! I've Got You Autographed at Books-A-MillionHOT right now: Bigfoot Must Die AutographedWelcoming Cas Asby to ISO!HOT right now: An Ending In Itself LP (Opened & Signed)Anthony Risi is #3 in October's Sellers of the Month!East Coast Collector's Service is #2 in October's Sellers of the Month!Toolcircle left ★★★★★ feedback for ChallengerCollectibles: “Absolutely amazing job by Chase and Challeng…”HOT right now: The Greening Court (Signed Book)New Drop just released! Crown Me Dead (Deluxe Limited Edition) (Signed Book) at Barnes & NobleIn2flicks Autographs holds the crown for The Boxtrolls — Cast on Graphmasters!HOT right now: Tasting History a Recipe for Disaster Autographedrainman614 left ★★★★★ feedback for Vdecostello: “I have purchased from Vinny several times an…”HOT right now: Crown Me Dead (Deluxe Limited Edition) (Signed Book)Happy birthday Dania Ramirez!New Drop just released! The Greening Court (Signed Book) at Barnes & NobleLiam Dixon is today's Member Signature of the Day!John Lindsay and Chris Michaels VO (Cool Kollections) are now friends on RACC!Welcoming alexus jekill to ISO!In2flicks Autographs holds the crown for Ali G: Who Iz I? — Cast on Graphmasters!Valhalla_Collectables left ★★★★★ feedback for in2flicks: “Bought Several Windows, all labelled, really…”North Collectors Co. is October's Seller of the Month!New Drop just released! When You Least Expect It Autographed at Books-A-MillionHappy birthday Brooke Lyons!In2flicks Autographs holds the crown for Les Misérables — Cast on Graphmasters!
Jeff Karstens
ⓘ

Jeff Karstens

Baseball

Karstens attended Mount Miguel High School in Spring Valley, California. In his senior season, he was the team\'s Most Valuable Player, a First-Team All-Conference Honors selection, and a Second-Team All-San Diego selection. In his senior year, he posted an 8–2 record with a 2.99 ERA. After high school, Karstens attended Grossmont College and Texas Tech University in Lubbock, Texas, where he played for the Red Raiders.\n', '

Karstens was drafted in the 19th round of the 2003 Major League Baseball draft by the New York Yankees. He played the 2005 season with the Yankees\' Double-A affiliate, the Trenton Thunder, posting a 12–11 record with a 4.15 ERA and 147 strikeouts. He led his team in wins with 12 (3rd most in the league), in Games started with 27 (2nd in the league), and in innings pitched with 169 (4th in the league).\n', '

Karstens started the 2006 season with the Yankees Triple-…

Full biography →
No Jeff Karstens autographs on eBay right now.
They come and go. We’ll email you the moment one lists.
🔔 Sign in to get an alert

ISO
Nobody has an ISO for Jeff Karstens yet. Be the first.

What’s an ISO?

ISO means in search of. You post the autograph you want (who, what item, your budget), and sellers who can get it, or already have it, reach out to you. It’s free, and it’s how many collectors find pieces that never hit eBay.

In RACC collections

Pieces RACC members have put on show

No member has shown a Jeff Karstens piece yet. Add yours.

No Jeff Karstens drops yet. Be first to know when there is one. Drops are official signed merchandise that artists, record labels and official distributors release regularly, and they sell out fast.

Alerts come as one daily summary email, most popular first.

TTM
Nobody has logged a through-the-mail request to Jeff Karstens yet. Be the first to log a TTM.

×

Questions? Message RACC Team

When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

© 2026 Real Autograph Collectors Club