The Cardinals officially have placed Rafael Furcal on the disabled list while unofficially conceding the All-Star shortstop's season is over.

A magnetic resonance imaging performed in St. Louis this afternoon found a tear in Furcal's right ulnar collateral ligament. Even a minimal, or Grade I, tear requires a minimum six weeks' recovery. It is suspected that Furcal suffered a more significant tear that will require ligament replacement surgery. Such a procedure entails a rehab of 6-8 months for a position player.

Pete Kozma will make his first major-league start of the season and fourth of his career tonight, a day before major league rosters may expand.

Manager Mike Matheny noted this afternoon that any additions to the Cardinals' roster will occur after the Triple-A season concludes Monday.

The club will refrain from announcing a course of action until team medical supervisor Dr. George Paletta examines Furcal and the MRI results. Paletta was in transit from Denver to St. Louis Friday afternoon.

"There has been some damage to the ligament; it's just a matter of how those results are viewed," Matheny said.

Impressed by Kozma's arm, the Cardinals are willing to expose him for at least the next several days. Matheny noted Kozma's defense as the overriding factor in the decision to promote him. Matheny referred to any offensive production the club may receive from him as "a bonus."

"When something like that happens it's an opportunity for someone to step up, not just at shortstop, but to pick up the slack and the energy (Furcal) brings walking in here every day," Matheny said. "Somebody else is going to have to take over that."