VIERA, Fla. -- Jayson Werth was sidelined for this morning's workout, held out for precautionary reasons due to back spasms.
Manager Davey Johnson wasn't overly concerned about what appears to be a minor tweak to his starting right fielder.
"I'm not worried," Johnson said. "There's plenty of time."
Werth may not be in the lineup for either of the Nationals' first two exhibition games later this week (Friday against Georgetown University, Saturday at the Astros) but Johnson already wasn't planning to use most of his regulars in either game.
He'll probably make his game debut Sunday at home against Houston, though the Nationals will be cautious with their 126 million right fielder.
"It's something I'm not taking any chances with," Johnson said. "I know he worked out a lot in D.C. (over the winter), hit and worked out. So I'm not worried about him."
Werth was one of four Nationals (along with Michael Morse, Drew Storen and Tyler Clippard) who attended last night's Daytona 500 and watched up close from the pits.