Tatis Jr. wears mask during workout; Pham tests positive

San Diego Padres shortstop Fernando Tatis Jr., right, jokes with second baseman Jurickson Profar during baseball training at Petco Park, Friday, July 3, 2020, in San Diego. (AP Photo/Gregory Bull)

San Diego Padres shortstop Fernando Tatis Jr., left, jokes with teammate third baseman Ty France during baseball training at Petco Park, Friday, July 3, 2020, in San Diego. (AP Photo/Gregory Bull)

Members of the San Diego Padres meet in the infield during baseball training at Petco Park, Friday, July 3, 2020, in San Diego. (AP Photo/Gregory Bull)

San Diego Padres starting pitcher Chris Paddack, center, looks on during baseball training at Petco Park Friday, July 3, 2020, in San Diego. (AP Photo/Gregory Bull)

CORRECTS TO THIRD BASEMAN MANNY MACHADO NOT SHORTSTOP JORGE MATEO - San Diego Padres third baseman Manny Machado, right, passes teammate Fernando Tatis Jr. during baseball training at Petco Park, Friday, July 3, 2020, in San Diego. (AP Photo/Gregory Bull)

San Diego Padres third baseman Manny Machado, center, jokes with teammate second baseman Jurickson Profar, left, during baseball training at Petco Park Friday, July 3, 2020, in San Diego. (AP Photo/Gregory Bull)

San Diego Padres second baseman Jurickson Profar jokes during baseball training at Petco Park, Friday, July 3, 2020, in San Diego. (AP Photo/Gregory Bull)