The Cardinals, who have struggled to find pitching this season, signed released pitcher Tomo Ohka to a minor league deal. With Toronto this year, Ohka was 2-5 with a 5.79 ERA. His contract calls for him to be called up within 10 days or he can pursue other opportunities, according to sources close to negotiations. With Chris Carpenter out until September, a lot is riding on his signing to come up in that number three hole behind the struggling Kip Wells and Anthony Reyes. Ohka will join the Cardinals within the next 10 days and probably start right around the start of July.