TORONTO (AP) An off-day trip to the health club knocked out Toronto catcher Russell Martin.

Feeling ''woozy'' following an extended spell in the sauna at his Toronto residence Thursday, Martin injured his left knee when he passed out and fell while taking a cold shower. He is expected to miss at least two games.

''I woke up and I had the shower curtain half on my body and the rest of my head was kind of sticking outside the shower,'' Martin said. ''It's a weird feeling.''

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An MRI on Martin's knee Friday showed no structural damage, and the four-time All-Star said he may have aggravated an old injury.

''I just sat in the locker room for 10 minutes, completely drained,'' Martin said. ''It was scary, but i guess it could have been worse.''

Martin said he often treats soreness by alternating hot and cold water and has felt ''weak'' before but never lost consciousness.

An 11-year veteran who is in the second season of a five-year, $82 million contract, Martin is batting .228 with seven home runs and 36 RBIs

Josh Thole is starting for Toronto against Seattle on Friday. Thole was already expected to catch Saturday's game, when knuckleballer R.A. Dickey starts for the Blue Jays. Manager John Gibbons said he hopes Martin can play again Sunday.