2001 Warning Track is an insert set in 2001 Studio. All three variations were randomly inserted into packs.
The base 34 card set that consisted of great sluggers and pieces of the walls from various stadiums, primarily Three Rivers Stadium that was home field of the Pirates prior to their new PNC park. Note – Card #26 Hank Aaron does not exist in the set and Card #28 Roberto Clemente is short printed. None of the cards are serial numbered.
The set was paralleled by an Off The Wall parallel set that serial numbered to 25 copies per card. Card #26 Hank Aaron is included. Additionally a partial parallel set of seven of the cards were sticker autographed and serial numbered to 25 copies per card.
Warning Track Gallery[]
WT-01 Andruw Jones
WT-03 Gary Sheffield
WT-14 Frank Robinson
WT-20 Mike Schmidt
Checklist[]
| Number | Player | Team | AU |
| WT-01 | Andruw Jones | Braves | |
| WT-02 | Rafael Palmeiro | Orioles | AU |
| WT-03 | Gary Sheffield | Dodgers | |
| WT-04 | Larry Walker | Rockies | |
| WT-05 | Shawn Green | Dodgers | AU |
| WT-06 | Mike Piazza | Mets | |
| WT-07 | Barry Bonds | Giants | |
| WT-08 | JD Drew | Cardinals | |
| WT-09 | Magglio Ordonez | White Sox | |
| WT-10 | Todd Helton | Rockies | |
| WT-11 | Juan Gonzalez | Indians | AU |
| WT-12 | Pat Burrell | Phillies | |
| WT-13 | Mark McGwire | Cardinals | |
| WT-14 | Frank Robinson | Orioles | |
| WT-15 | Manny Ramirez | Red Sox | |
| WT-16 | Lance Berkman | Astros | AU |
| WT-17 | Kirby Puckett | Twins | |
| WT-18 | Johnny Bench | Reds | |
| WT-19 | Chipper Jones | Braves | |
| WT-20 | Mike Schmidt | Phillies | |
| WT-21 | Vladimir Guerrero | Expos | AU |
| WT-22 | Sammy Sosa | Cubs | |
| WT-23 | Cal Ripken Jr | Orioles | |
| WT-24 | Roberto Alomar | Indians | AU |
| WT-25 | Willie Stargell | Pirates | |
| WT-26 | Hank Aaron | Braves | |
| WT-27 | Scott Rolen | Phillies | |
| WT-28 | Roberto Clemente | Pirates | |
| WT-29 | Tony Gwynn | Padres | AU |
| WT-30 | Ivan Rodriguez | Rangers | |
| WT-31 | Sean Casey | Indians | |
| WT-32 | Frank Thomas | White Sox | |
| WT-33 | Jeff Bagwell | Astros | |
| WT-34 | Jeff Kent | Giants | |
| WT-35 | Reggie Jackson | Yankees |
| Base Set |
| Insert Sets |
| Diamond Collection - Leather and Lumber - Masterstrokes - Private Signings - Round Trip Tickets - Warning Track |
| Other Information |
| Card Images - Box Breaks |