When the city of Chicago gave the Cubs permission to sell tickets for 2021 games at Wrigley Field, capacity was set at 20 percent, or about 8,200 tickets.
On Thursday, Mayor Lori Lightfoot announced increases in capacity for various outdoor events:
Outdoor performance venues or seated spectator events with a capacity of 200 or more can operate at 25 percent.
This apparently applies to Wrigley Field, because:
Breaking baseball news -source confirms Chicago Mayor Lori Lightfoot has given the Cubs the go ahead to sell another 2000 tickets per game (5 %) for the first home stand.