Nats, Astros, Cards cancel workouts over virus testing delay
Houston Astros first baseman Yuli Gurriel runs through a drill during a baseball practice at Minute Maid Park, Sunday, July 5, 2020, in Houston. (AP Photo/David J. Phillip)

Houston Astros first baseman Yuli Gurriel runs through a drill during a baseball practice at Minute Maid Park, Sunday, July 5, 2020, in Houston. (AP Photo/David J. Phillip)

Jul. 05, 2020 02:57 PM EDT
An empty Nationals Stadium is viewed during a Washington Nationals baseball training camp workout Sunday, July 5, 2020, in Washington. (AP Photo/Carolyn Kaster)

An empty Nationals Stadium is viewed during a Washington Nationals baseball training camp workout Sunday, July 5, 2020, in Washington. (AP Photo/Carolyn Kaster)

Jul. 05, 2020 03:07 PM EDT
Houston Astros first baseman Yuli Gurriel reacts after completing a drill during a baseball practice at Minute Maid Park, Sunday, July 5, 2020, in Houston. (AP Photo/David J. Phillip)

Houston Astros first baseman Yuli Gurriel reacts after completing a drill during a baseball practice at Minute Maid Park, Sunday, July 5, 2020, in Houston. (AP Photo/David J. Phillip)

Jul. 05, 2020 02:57 PM EDT
FILE - In this June 1, 2019, file photo, Texas Rangers' Joey Gallo connects for a two-run home run on a pitch from Kansas City Royals' Homer Bailey in the fourth inning of a baseball game in Arlington, Texas. Rangers slugger Joey Gallo has tested positive for COVID-19, though the team says the All-Star right fielder is asymptomatic. General manager Jon Daniels said Monday, July 6, 2020, that Gallo is isolated at his apartment in Dallas and not around teammates. (AP Photo/Tony Gutierrez, File)

FILE - In this June 1, 2019, file photo, Texas Rangers' Joey Gallo connects for a two-run home run on a pitch from Kansas City Royals' Homer Bailey in the fourth inning of a baseball game in Arlington, Texas. Rangers slugger Joey Gallo has tested positive for COVID-19, though the team says the All-Star right fielder is asymptomatic. General manager Jon Daniels said Monday, July 6, 2020, that Gallo is isolated at his apartment in Dallas and not around teammates. (AP Photo/Tony Gutierrez, File)

Jul. 06, 2020 02:37 PM EDT
Washington Nationals' manager Dave Martinez, left, and bullpen coach Henry Blanco walk together during a baseball training camp workout at Nationals Stadium, Sunday, July 5, 2020, in Washington. (AP Photo/Carolyn Kaster)

Washington Nationals' manager Dave Martinez, left, and bullpen coach Henry Blanco walk together during a baseball training camp workout at Nationals Stadium, Sunday, July 5, 2020, in Washington. (AP Photo/Carolyn Kaster)

Jul. 05, 2020 02:46 PM EDT
Washington Nationals' pitching coach Paul Menhart, left, talks with pitcher Daniel Hudson on the mound during a baseball training camp workout at Nationals Stadium, Sunday, July 5, 2020, in Washington. (AP Photo/Carolyn Kaster)

Washington Nationals' pitching coach Paul Menhart, left, talks with pitcher Daniel Hudson on the mound during a baseball training camp workout at Nationals Stadium, Sunday, July 5, 2020, in Washington. (AP Photo/Carolyn Kaster)

Jul. 05, 2020 02:24 PM EDT
Washington Nationals pitcher Tanner Rainey throws during a baseball training camp workout at Nationals Stadium, Sunday, July 5, 2020, in Washington. (AP Photo/Carolyn Kaster)

Washington Nationals pitcher Tanner Rainey throws during a baseball training camp workout at Nationals Stadium, Sunday, July 5, 2020, in Washington. (AP Photo/Carolyn Kaster)

Jul. 05, 2020 02:35 PM EDT
Washington Nationals' manager David Martinez looks out from the dugout during a baseball training camp workout at Nationals Stadium, Sunday, July 5, 2020, in Washington. (AP Photo/Carolyn Kaster)

Washington Nationals' manager David Martinez looks out from the dugout during a baseball training camp workout at Nationals Stadium, Sunday, July 5, 2020, in Washington. (AP Photo/Carolyn Kaster)

Jul. 05, 2020 02:34 PM EDT
Washington Nationals' pitcher Tanner Rainey, foreground, pauses on the mound during a baseball training camp workout at Nationals Stadium, Sunday, July 5, 2020, in Washington. (AP Photo/Carolyn Kaster)

Washington Nationals' pitcher Tanner Rainey, foreground, pauses on the mound during a baseball training camp workout at Nationals Stadium, Sunday, July 5, 2020, in Washington. (AP Photo/Carolyn Kaster)

Jul. 05, 2020 02:21 PM EDT