State officials announced modifications to California’s reopening blueprint Friday, allowing sporting venues and theme parks, and other kinds of outdoor venues, to reopen in a limited fashion as early as April 1.

The new guidelines arrive at the start of Major League Baseball season, allowing the San Diego Padres to have up to 20 percent of the seats filled at Petco Park provided the region can climb out of the most-restrictive purple tier of the state’s reopening system by the end of the month.

Likewise, theme parks, including Legoland and Disneyland, will be able to operate at 15 percent of their full capacity in the red tier though officials said that there will be restrictions on the amount of time that can be spent on indoor rides.

Even if the region does not escape the purple tier by April 1, a small number of fans will be allowed to attend any outdoor sports or live entertainment venue, with attendance capped at 100 or fewer. In both the red and purple tiers, social distancing and mask wearing will be required of all visitors.

Perhaps the biggest restriction has to do with who can attend. Theme parks will be required to restrict their sales to California residents who will need to have an address in the Golden State to buy tickets.