A two-hour, 20-minute rain delay could not stop Shota Imanaga on Sunday afternoon. The Chicago Cubs rookie hurler dazzled against the visiting Washington Nationals, tossing seven shutout innings with four strikeouts as part of a 5-0 Cubs triumph. The strong outing made Imanaga the first Cubs rookie pitcher since Dick Drott (1957) to win 15 games in a season. The lefty now owns a 15-3 record in his first MLB season, and the Cubs have gone 23-6 in games he's started.