| Card no. | Player | Year | Set name | |
| M01 | Mark McGwire | 1999 | Upper Deck Challengers for 70 Mark on History | |
| M02 | Mark McGwire | 1999 | Upper Deck Challengers for 70 Mark on History | |
| M03 | Mark McGwire | 1999 | Upper Deck Challengers for 70 Mark on History | |
| M04 | Mark McGwire | 1999 | Upper Deck Challengers for 70 Mark on History | |
| M05 | Mark McGwire | 1999 | Upper Deck Challengers for 70 Mark on History | |
| M06 | Mark McGwire | 1999 | Upper Deck Challengers for 70 Mark on History | |
| M07 | Mark McGwire | 1999 | Upper Deck Challengers for 70 Mark on History | |
| M08 | Mark McGwire | 1999 | Upper Deck Challengers for 70 Mark on History | |
| M09 | Mark McGwire | 1999 | Upper Deck Challengers for 70 Mark on History | |
| M10 | Mark McGwire | 1999 | Upper Deck Challengers for 70 Mark on History | |
| M11 | Mark McGwire | 1999 | Upper Deck Challengers for 70 Mark on History | |
| M12 | Mark McGwire | 1999 | Upper Deck Challengers for 70 Mark on History | |
| M13 | Mark McGwire | 1999 | Upper Deck Challengers for 70 Mark on History | |
| M14 | Mark McGwire | 1999 | Upper Deck Challengers for 70 Mark on History | |
| M15 | Mark McGwire | 1999 | Upper Deck Challengers for 70 Mark on History | |
| M16 | Mark McGwire | 1999 | Upper Deck Challengers for 70 Mark on History | |
| M17 | Mark McGwire | 1999 | Upper Deck Challengers for 70 Mark on History | |
| M18 | Mark McGwire | 1999 | Upper Deck Challengers for 70 Mark on History | |
| M19 | Mark McGwire | 1999 | Upper Deck Challengers for 70 Mark on History | |
| M20 | Mark McGwire | 1999 | Upper Deck Challengers for 70 Mark on History | |
| M21 | Mark McGwire | 1999 | Upper Deck Challengers for 70 Mark on History | |
| M22 | Mark McGwire | 1999 | Upper Deck Challengers for 70 Mark on History | |
| M23 | Mark McGwire | 1999 | Upper Deck Challengers for 70 Mark on History | |
| M24 | Mark McGwire | 1999 | Upper Deck Challengers for 70 Mark on History | |
| M25 | Mark McGwire | 1999 | Upper Deck Challengers for 70 Mark on History | |
There were 25 matches