NEW YORK (AP) — Fans return to major league stadiums for openers on Thursday amid pandemic attendance restrictions in most places. Baseball Commissioner Rob Manfred can envision filled ballparks by midseason. Capacity is limited to about 12% at the season’s start in Boston and Washington. Twelve teams are at 20%, Colorado at about 43% and Houston at 50%. The only team higher is Texas, at 100%. “I hope by midsummer that we have ballparks that are unrestricted and we have full fan access,” Manfred said during an interview with The Associated Press. Manfred thinks most players could be vaccinated against COVID-19 by mid-May.