Czech Republic striker Jan Koller's fate in the World Cup looks uncertain after contradicting statements were issued on Tuesday. Czech manager Karel Bruckner has said, after the team's 3-0 victory over USA, that the injury looked serious and went on to insist that the player would wasn't expected to make a comeback in the World Cup. "Unfortunately his injury is very serious. It is the only negative thing from today's match," Bruckner was quoted as saying by FIFA's official website. Koller collided with USA's Oguchi Onyewu only to be stretchered off the field while clutching his hamstring only two minutes before the interval. Nevertheless, the future Monaco striker underwent a scan on Tuesday which proved that the injury wasn't as serious as initially presumed. "I can confirm that after tests at the hospital, there is no deformity in the hamstring. We will see (how he reacts) tomorrow. We thought at first it was a serious injury. We don't think that any more," a team spokesman said. Koller, the all-time record scorer for the Czech team and who has only recently recovered from a ruptured cruciate ligament, was quick to follow with a statement saying that he would be back in time for the team's third Group E game. “I will have four days' rest now and I am confident I will be back for our third group game,” Koller said. However, Czech doctor Jiri Foucek insisted that the player wasn't expected to recover anytime soon and said that he might be ready for the team's quarter-finals at least. “The recovery period could be anything between 10 days and six weeks. We hope that Jan would be able to play in a quarter-final,” Foucek was quoted as saying by BBC. Czeck will next play against Ghana on June 17th in Cologne before playing against Italy on June 22nd.