Brent Knackert Autographs
Brent Bradley Knackert (born August 1, 1969) is an American former pitcher in Major League Baseball who played for the Seattle Mariners (1990) and Boston Red Sox (1996). Listed at 6' 3", 185 lb., he batted and threw right-handed.
In a two-season career, Knackert posted a 1-2 record with 33 strikeouts and a 7.04 ERA in 32 appearances, including two starts and 47+1⁄3 innings of work.
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Read more about Brent Knackert on Wikipedia
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Current items with a signature of Brent Knackert
These are the most current items with a signature of Brent Knackert that were listed on eBay and on other online stores - click here for more items.
| Picture | Item Title | Price | Store |
 | 1991 Topps Baseball #563 Brent Knackert Seattle Mariners Autographed Card | $9.95 |  |
Traded items with a signature of Brent Knackert
The most expensive item with a signature of Brent Knackert (1991 Upper Deck Baseball #378 Brent Knackert Signed Autograph (no COA)) was sold in August 2025 for $19.95 while the cheapest item (1992 DONRUSS BRENT KNACKERT MARINERS AUTOGRAPH SIGNED) found a new owner for $0.01 in February 2010. The month with the most items sold (2) was March 2014 with an average selling price of $10.49 for an autographed item of Brent Knackert. Sold items reached their highest average selling price in August 2025 with $19.95 and the month that saw the lowest prices with $0.01 was February 2010. In average, an autographed item from Brent Knackert is worth $2.99.
Most recently, these items with a signature of Brent Knackert were sold on eBay - click here for more items.
| Picture | Item Title | Price | Store |
 | 1990 Donruss (The Rookies) SIGNED: Brent Knackert, MARINERS | $2.99 |  |
| 1990 Topps Baseball #52T Brent Knackert Signed Autograph (no COA) | $19.95 | |
| 1991 Upper Deck Baseball #378 Brent Knackert Seattle Mariners Autographed Card | $10.95 | |
| 1991 Upper Deck Baseball #378 Brent Knackert Signed Autograph (no COA) | $19.95 | |
| 1991 Upper Deck Signed #378 Brent Knackert Seattle Mariners Autographed Card | $1.62 | |
| 1991 Upper Deck Signed #378 Brent Knackert Seattle Mariners Autographed Card | $1.29 | |
| 1991 Upper Deck Signed #378 Brent Knackert Seattle Mariners Autographed Card | $0.99 | |
| 1992 Donruss Signed #608 Brent Knackert Seattle Mariners Autographed Card | $1.45 | |
| 1992 SkyBox Baseball #372 Brent Knackert Autographed Card | $9.95 | |
| 1992 SkyBox Signed #153 Brent Knackert Jacksonville Suns Autographed Card | $1.45 | |
| BRENT KNACKERT autograph 1990 TOPPS TRADED signed card MARINERS 90 | $0.99 | |
| Brent Knackert Autographed 1990 Donruss the Rookies Rookie Card #52 Mariners | $14.99 | |
| Brent Knackert Seattle Mariners 1990 Donruss #52 Signed Rookie Card | $7.99 | |
| Brent Knackert Seattle Mariners Personally Autographed Card | $1.25 | |
| Mariners Brent Knackert Signed Autographed 1992 SkyBox Jacksonville Suns Nr.Mint | $4.45 | |
