The 2013 MLB season will provide plenty of day-to-day excitement, but we shouldn’t forget about the teams and individuals who will gradually approach records as the summer wears on.

Several pursuits attest more to loyalty than skill. Challengers to the following franchise records, for example, have reached free agency multiple times during their careers, only to re-sign with familiar clubs.

Changes in the sport itself—expanded postseason format, reorganization of both leagues and increased revenue through television deals—help in other instances.

Whatever the case, seven long-standing records are about to fall.

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