"We've had a big cushion [in MLS] since probably the first third of the season," Kreis said. "We're taking full advantage of that right now, in a bad way. This is the first time the guys will clearly have their backs against the wall. ... If we lose or draw, odds are we'll be done with this tournament. So, there's only one result that is acceptable."
And, with five home losses this season, including Saturday's 2-1 defeat to FC Dallas, Rio Tinto hasn't been an impregnable fortress.
"We know if we don't win we're in trouble," RSL midfielder Javier Morales said.
Kreis said little is known about Tauro, competing in its fourth CONCACAF (Confederation of North, Central American and Caribbean Association Football) tournament and first game in the current competition. The team's best finish was a third place during Group play in 2008-09.
Real, 13-12-3 in all competitions, did not receive any video for scouting and must rely on individual reports. Kreis, however, was more concerned about his focusing for a complete 90 minutes.
"I wouldn't care who the opponent was, to be honest," Kreis said. "I'll talk a little about the opponent and I'll talk a lot about us.
Tauro FC (4-1-1), the most decorated club in Panamanian league history, was founded in 1984 and has won nine championships since the league began in 1988.
Tauro has outscored opponents 9-3 in 2012, with five goals scored on the road. As a red flag for RSL, 44 percent of the Panamanians' goals have come in the final 15 minutes of games. Edwin Enrique leads with five scores.
RSL's tendency to push for victories at home has left it open to counterattacks.
"It's really all or nothing right now with the Champions League," RSL defender Nat Borchers said following Saturday's loss. "We've got to come out strong against the Panamanian team."