Well, the Sox used Pivetta that way:
His first 11 RP outings:
4 times he went ito his 3rd inning or completed 3 innings, then he went...
3.1
4.0
5.0
1.0
5.0
Then started a game for 7.1
4.0 in the pen
then started 2 games (4.1 & 5.0), then
5.0
0.2
2.0
3.0
Then he finished the season starting.
In 2022, Houck had these outing from the pen:
3.0
4.0
3.0
before becoming the finisher and 8th inning guy.
In 2021, Whitlock pitched numerous games into or up to 3 IP, but most were 1-2 IP.In 2022, after being demoted from the rotation, he pitched many games of 2-2.2 IP.
In 2022, Crawford only pitched 9 games in relief, but that included: 2.0, 3.0, 2.0, 5.1, In 2023, these in relief: 3.0, 6.1, 4.0, 2.1