Donnelly has been bothered by a sore neck muscle and upper back, but three visits to the chiropractor over the All-Star break reportedly fixed that, he said.
"You can write I (stink)," Donnelly said as he hurriedly exited the clubhouse and walked past reporters.
Donnelly has allowed 11 runs in his last five outings, spanning just four innings, could be in danger of losing his roster spot as soon as Saturday since the Angels have to make a roster move to activate Kelvim Escobar from the disabled list.
"It's 180 degrees from where he was in June," manager Mike Scioscia said.
If the club believes his struggles are related to his neck, Donnelly might wind up on the disabled list. If not, the one-time primary setup man in their bullpen could become the third pitcher this year to be designated for assignment.