THE ASSOCIATED PRESS

ST. PETERSBURG, Fla. -- Toronto first baseman Lyle Overbay does not have a concussion, but is feeling as if he did.

Overbay was out of the lineup for the fourth straight game Tuesday night because of post-concussion symptoms. He did resume on-field work before Toronto played at Tampa Bay and hopes to play again in the next few days.

Overbay was hurt last week when he collided with Blue Jays pitcher Brian Tallet. After having no problems for a couple days, Overbay was taken out of last Friday's game because he was not feeling well.

"I was struggling to concentrate, to focus," Overbay said. "It was never dizziness. I never really had a headache. Just a heavy head. Maybe like the sinus' are sore right there."

A CT scan was normal.

Also, Toronto infielder Yunel Escobar is expected to be out until Friday due to a stiff back. He hasn't played since Saturday.

Blue Jays manager Cito Gaston said left-hander David Purcey, out with a right foot injury, will be reinstated from the 15-day disabled list and catcher J.P. Arencibia will be recalled from triple-A Las Vegas when rosters can be expanded on Wednesday.