Possible Clues:

• First batter to hit a home run against every Major League Baseball team
• Fifth 600-home-run-club member
• Future star athlete who debuted with the Rangers in 1989
• MVP slugger Sammy
• McGwire's onetime home-run rival
• Sammy who was once ejected over a corked bat
• One-time Cub with a big club
• 1998 baseball MVP
• Dominican-born player with more than 600 homers
• Slugger with nearly 600 homers