than for others. The Cubs wouldn't be illustrative today because most of their games sell out. But the 1971 Cubs are a good comparison to the 1971 Reds, as the teams had fairly similar records (83-79 vs. 79-83) and neither was in particularly serious contention for the postseason. For the Reds, the biggest determinant of crowd size was the day of the week. For the Cubs, that was a factor too, but so was the opponent, and also the calendar. They drew big crowds for midweek games against the Mets, Reds, and Pirates, because those series were in the summer. They naturally sold out for their season opener against the Cards on Tuesday, April 6, but they also drew over 23,000 for game 2 the next day. When the Astros visited 2 weeks later, the crowds were well under 10,000; this was 17 years before Wrigley had lights. The Mets drew much better for a mid-week series in July than a weekend series in April. The Reds hosted the Dodgers at the same time, and had bigger crowds for 2 of the April dates.