Sunday's postponement of the Cubs/Cardinals game due to the death of Josh Hancock caused Angel Guzman to stay in the minors rather than take over the 5th starter's spot for the big league club. That may have cost him the 5th starter's spot altogether. Guzman started his third game for Iowa last night and only lasted 3 innings, giving up 7 runs on 4 hits, 4 walks, and a hit batter. Guzman has now started three games for Iowa and allowed 14 runs in 10.1 innings. Which has Lou Piniella saying, ''We might have to revisit this thing." Had Sunday's game not been postponed, the Cubs would have started Guzman against the Pirates yesterday. It's too bad Juan Mateo and Sean Marshall are recovering from injuries.