2018 Topps Triple Threads - Bat Knobs Book Cards
9 card bat knobs book cards subset from 2018 Topps Triple Threads (Baseball).
| # | Player | Team | Notes |
|---|---|---|---|
| TTBK-AP | Albert Pujols | Angels | |
| TTBK-BH | Bryce Harper | Washington Nationals | |
| TTBK-DM | Don Mattingly | New York Yankees | |
| TTBK-JV | Joey Votto | Cincinnati Reds | |
| TTBK-MP | Mike Piazza | New York Mets | |
| TTBK-MT | Mike Trout | Angels | |
| TTBK-OS | Ozzie Smith | St. Louis Cardinals | |
| TTBK-PG | Paul Goldschmidt | Arizona Diamondbacks | |
| TTBK-WB | Wade Boggs | Boston Red Sox |