The drawn-out structure of the MLB season allows struggling players ample time to prove themselves. With one month to go until the All-Star break, however, the hot seat is finally making many of them perspire.
They want desperately to avoid suffering the same fate as veterans Rick Ankiel (New York Mets), Chris Nelson (Los Angeles Angels) and John Baker (San Diego Padres), who all were recently designated for assignment.
Less experienced players on this list could be directly demoted to the minor leagues as a hot-shot prospect progresses or an injured regular returns to full strength. For impending free agents like John Buck, Stephen Drew and Brendan Ryan, the risk is being traded to another team.
The following individuals have officially been warned to improve their performance immediately to preserve their current major league jobs.