You missed some data there. Of Dobnak's 7 relief appearances, he pitched in the 8th four times. He pitched in the 9th or 10th three times.
Here are some highlights.
April 1st, pitched in the 10th, takes the loss.
April 5th, pitched in the 8th and 9th, allowed 5 runs.
April 13th, pitched in the 8th, takes the loss.
April 28th, pitched in the 8th and 9th. Did a good job!
May 1st, pitched in the 8th, allowed 2 runs.