<p>The Cubs have postponed their afternoon game as a steady downpour heads for Chicago Sunday afternoon and through the evening.</p><p>National Weather Service forecasters expect a "steady soaking rainfall" that could cause flooding in some parts of the metro area — particularly near and south of I-88.</p><p>As a result, the Cubs postponed their 1:20 p.m. game against the Toronto Blue Jays. The make-up game is scheduled for 1:20 p.m.