Pravda.Tigers:

Jackson had flu-like symptoms as he approached his start, the same bug that's been invading the Tigers clubhouse all week.

"He was sick as a dog. I was really worried about him whether he was going to hold up," Tigers manager Jim Leyland said. "But he went out there and got through it. It was a courageous effort."
...
"I just felt weak," Jackson said. "I'm not sure if it's a slight case of what's going around, but I was not fully energized."
...
In the first, after running to back up third on a one-out double by Endy Chavez, Jackson said he nearly threw up.

A lot of times players will say something that their opponents use as bulletin board material to get amped up for the next game. This is the opposite of that.