They added him to their 40 man roster after the 2011 season to protect him from the Rule 5 draft.

After the 2009 season, Jackson was added to the 40-man roster to protect him from the Rule 5 draft.

He was added to the Tigers' 40 man roster after the 2011 season to protect him from the Rule 5 draft.

Following the 2010 season, he was added to the Padres' 40 man roster to protect him from the Rule 5 draft.

Mitchell was added to the Yankees 40-man roster after the 2011 season to protect him from the Rule 5 draft.

He was drafted by the A's prior to the 1981 season in the Rule 5 Draft.

The club then signed him to a 1-year, $675,000 deal to avoid losing him in the Rule 5 Draft.

Cousins was added to the Marlins' 40 man roster following the 2009 season to protect him from the Rule 5 draft.

The White Sox then acquired him through the Rule 5 draft.

Examples of these rules are the Rule 5 Draft and the Disabled list.