Minnesota United's Sunday game at FC Dallas was postponed Saturday night after the team confirmed positive COVID-19 tests from two first-team players.
All club players and staff have been tested three additional times since the first positive test, a team statement released Saturday said. Those same two players were positive, but all other tests came back negative.
The team did not name the two first-team players who tested positive.
Training has been suspended and all players and team staff have gone into quarantine while additional testing and "extensive" contact tracing takes place, the statement said.
Details regarding a rescheduled game day will be announced at a later date during a season reconfigured after a four-month suspension by the pandemic. The regular season is set to end Nov. 8, when the Loons and FC Dallas are scheduled to play for a fourth time in three months.
The Loons were scheduled to fly by chartered aircraft to Dallas on Sunday morning for a 7:30 p.m. game and return that same night. MLS teams have been flying same-day charters in an attempt to minimize exposure to the virus.
On Friday, Loons coach Adrian Heath both praised his players' responsibility and diligence and cautioned about the situation now that MLS teams are playing regular-season games in their own markets. They are doing so outside the protective bubble under which the league's midsummer MLS is Back tournament was played so successfully in Orlando.
The NBA and WNBA played out their seasons under similar bubbles in Florida and the NHL at two Canadian sites.