The Rockies couldn't acquire a starter in time to avoid pitching right-hander Tim Harikkala against the Cubs Sunday, but they're considering trading for Blue Jays righty Josh Towers or Orioles righty Steve Trachsel, both of whom have cleared waivers. They also inquired about A's righty Chad Gaudin, who is 0-5 with an 8.54 ERA in his last six starts, but determined the price to be too high. Towers, also drawing interest from other clubs, could be moved in the next several days . . .

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