![2017 St. Louis Cardinals Brett Cecil #21 Game Issued Grey Jersey](https://image.isu.pub/170130220900-24191830f342cd03f3878599cd67477d/jpg/page_1_thumb_large.jpg)
2017 Central Missouri Mules Baseball Media Guide by UCM Athletics
![2017 St. Louis Cardinals Brett Cecil #21 Game Issued Grey Jersey](https://i0.wp.com/www.baseballamerica.com/wp-content/uploads/bba-media/epyb10hm/hjerpe-cooper-courtesy-of-oregon-state.jpg?resize=768%2C576&ssl=1)
Cooper Hjerpe Stats & Scouting Report — College Baseball, MLB
![2017 St. Louis Cardinals Brett Cecil #21 Game Issued Grey Jersey](https://sabrbaseballcards.files.wordpress.com/2022/01/bento.jpg?w=1024)
SABR's Baseball Cards Research Committee – Page 10
![2017 St. Louis Cardinals Brett Cecil #21 Game Issued Grey Jersey](https://image.isu.pub/230213210522-b0cd3eb59e658ed6ce252b8b73833a34/jpg/page_1.jpg)
2023 Georgia Baseball Media Guide by Georgia Bulldogs Athletics
![2017 St. Louis Cardinals Brett Cecil #21 Game Issued Grey Jersey](https://ansel.frgimages.com/2020-st-louis-cardinals-brett-cecil-number-27-game-issued-pos-used-grey-jersey-44-831_ss2_p-200466034+u-zevbziokapcyzusfccgw+v-gmmhkoxewlwlyeygjbyp.jpg?_hv=2&w=340)
2017 St. Louis Cardinals Brett Cecil #21 Game Issued Grey Jersey
![2017 St. Louis Cardinals Brett Cecil #21 Game Issued Grey Jersey](https://rbicru7.com/cdn/shop/files/Scan24_c49653dc-0875-407b-ad01-188296731f8d_480x480.jpg?v=1697140403)
Baseball Singles
![2017 St. Louis Cardinals Brett Cecil #21 Game Issued Grey Jersey](https://lelands.com/images_items/item_86694_1.jpg)
Baseball Equipment- Sports Card and Sports Memorabilia Auctions
![2017 St. Louis Cardinals Brett Cecil #21 Game Issued Grey Jersey](https://i.ebayimg.com/thumbs/images/g/zQkAAOSwIxVkgRmM/s-l640.jpg)
St. Louis Cardinals Game Used MLB Memorabilia
![2017 St. Louis Cardinals Brett Cecil #21 Game Issued Grey Jersey](https://lelands.com/images_items/item_97297_1_213158.jpg)
Baseball Equipment- Sports Card and Sports Memorabilia Auctions
![2017 St. Louis Cardinals Brett Cecil #21 Game Issued Grey Jersey](https://i.ebayimg.com/images/g/aooAAOSwDFhkYjp2/s-l1600.jpg)
2017 St. Louis Cardinals Brett Cecil #21 Game Issued White Jersey
![2017 St. Louis Cardinals Brett Cecil #21 Game Issued Grey Jersey](https://www.juliensauctions.com/auctions/2021/Icons-and-Idols-Sports/Images/3281763.00.jpg)
Press Releases