Burton said he's having trouble controlling his pitches, another byproduct of the April cold.
Wintry weather postpones Jays-Twins; twinbill set →
"I feel fine. I'm healthy. I'm just human. We're under a little bit of a microscope and when we struggle it shows. I'll figure it out. We all go through these phases. It's just a matter of stopping a slump and starting a streak," he said.