Padres manager Bud Black said Thatcher, who has experienced knee issues in the past, will be reevaluated after Sunday's series finale with the Marlins to see if there is anything specifically causing the soreness. It's possible, Black said, that the Padres will have to place Thatcher on the disabled list.
Thatcher is 0-4 with a 3.37 ERA this season, but his absence during the Miami series has left San Diego with just six arms in the bullpen, and only two lefties, something that Black said the team can't continue to do.
"We can't turn back the clock to the '80s when we only kept nine or 10 pitchers and guys went seven or eight [innings] and the closer went two-plus," Black said. "Can't do it."