Autographs of Ketel Marte
Ketel Ricardo Marte Valdez (Spanish: keh-TELL mar-TEH; born October 12, 1993) is a Dominican professional baseball second baseman for the Arizona Diamondbacks of Major League Baseball (MLB). He has previously played in MLB for the Seattle Mariners. Marte made his MLB debut with the Mariners in 2015, and was traded to the Diamondbacks during the 2016–17 offseason. Marte has been named the starting second baseman for the 2019, 2024 and 2025 All-Star Games. In 2023, he won NLCS MVP en route to Arizona's first pennant since 2001.
Marte signed with the Seattle Mariners as an international free agent on August 13, 2010, receiving a $100,000 signing bonus. He made his professional debut in 2011 for the Dominican Summer League Mariners. In 2012, he played with the Everett AquaSox of the Class A Short Season Northwest League and Clinton LumberKings of the Class A Midwest League. Marte spent the 2013 season with Clinton and the High Desert Mavericks of the Class A-Advanced California League. He batted .295 with a .687 on-base plus slugging (OPS). Marte started 2014 with the Jackson Generals of the Double-A Southern League and was promoted to the Tacoma Rainiers of the Triple-A Pacific Coast League (PCL). He finished the season hitting .304 with a .746 OPS and four home runs. On November 20, 2014, Ketel was added to Seattle's 40-man roster.
The Mariners promoted Marte to the major leagues on July 31, 2015. Going into the 2016 season, Marte was named the team's starting shortstop following the trade of Brad Miller. However, Marte struggled in 2016, batting .259 with a .287 on-base percentage and striking out 84 times in 119 games while missing significant time due to a left thumb injury and mononucleosis that resulted in 3 separate stint on the disabled list. The Mariners attempted to trade Marte for the Cincinnati Reds' Zack Cozart during the season.
More about Ketel Marte Wikipedia
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Traded items with a signature of Ketel Marte
The most expensive item with a signature of Ketel Marte (KETEL MARTE SIGNED + ENCAPSULATED FUNKO POP MLB AZ DIAMONDBACKS - PSA/DNA COA) was sold in January 2026 for £240.83 while the cheapest item (Ketel Marte Seattle Mariners Signed 8x10 Photo Mill Creek Sports Autograph COA) found a new owner for £14.12 in October 2025. The month with the most items sold (4) was June 2026 with an average selling price of £125.71 for an autographed item of Ketel Marte. Sold items reached their highest average selling price in December 2025 with £149.80 and the month that saw the lowest prices with £14.12 was October 2025. In average, an autographed item from Ketel Marte is worth £76.65.
Most recently, these items with a signature of Ketel Marte were sold on eBay - click here for more items.
| Picture | Item Title | Price | Store |
 | Autographed Ketel Marte Diamondbacks 11x14 Photo Item#14577388 COA | £91.12 |  |
 | Autographed Ketel Marte Diamondbacks 11x14 Photo Item#14618307 COA | £169.45 | |
 | Autographed Ketel Marte Diamondbacks 16x20 Photo Item#14577389 COA | £91.12 | |
 | Autographed Ketel Marte Diamondbacks 16x20 Photo Item#14618308 COA | £160.30 | |
 | KETEL MARTE ARIZONA DIAMONDBACKS SIGNED 2020 GQ BASEBALL CARD SEATTLE MARINERS | £32.20 | |
| Ketel Marte Autographed Funko Pop Arizona Diamondbacks | £54.84 | |
| KETEL MARTE CLINTON LUMBERKINGS SIGNED DEBUT CARD SEATTLE MARINERS DIAMONDBACKS | £33.25 | |
 | Ketel Marte Funko Pop Signed 73 Arizona Diamondbacks Jsa Autograph Mlb Baseball | £111.64 | |
| Ketel Marte In Person Signed Funko Pop Arizona Diamondbacks MLB Autographed | £67.44 | |
| Ketel Marte Seattle Mariners Signed 8x10 Photo Mill Creek Sports Autograph COA | £14.12 | |
| KETEL MARTE SIGNED + ENCAPSULATED FUNKO POP MLB AZ DIAMONDBACKS - PSA/DNA COA | £240.83 | |
| KETEL MARTE SIGNED + ENCAPSULATED FUNKO POP MLB AZ DIAMONDBACKS - PSA/DNA COA | £226.66 | |
| Ketel Marte Signed Autographed 11x14 Spotlight Picture Photo | £30.87 | |
| KETEL MARTE SIGNED AUTOGRAPHED ARIZONA DIAMONDBACKS FUNKO POP JSA COA. T-3 | £112.91 | |
| Ketel Marte Signed Autographed Funko Pop #73 Diamondbacks | £72.93 | |
