reliever

US /rɪˈliː.vɚ/
UK /rɪˈliː.vɚ/
"reliever" picture
1.

a person or thing that provides relief from pain, distress, or difficulty

:
The cool compress was a great reliever for her headache.
He acted as a reliever for the stressed team members.
2.

in baseball, a pitcher who comes into the game to replace another pitcher, usually in the later innings

:
The coach brought in a new reliever in the eighth inning.
The team's bullpen has several strong relievers.