The wreckage of St. Louis cardinals pitcher Josh Hancock's 2007 Ford Explorer sits in the parking lot of the St. Louis Police Department. Hancock was killed in the crash early Sunday in St. Louis.

St. Louis ? Josh Hancock, a relief pitcher who helped the St. Louis Cardinals win the World Series last season, died early Sunday when his sport utility vehicle slammed into the back of a tow truck.

The Cardinals postponed their home game Sunday night against the Chicago Cubs. It was the second time in less than five years that a St. Louis pitcher died during the season. Darryl Kile was found dead in his hotel room in 2002.

“There’s a big hole that’s going to be there,” Cardinals manager Tony La Russa said. “This is brutal to go through.”

Police said the 29-year-old Hancock, who was single, was alone in his 2007 Ford Explorer when the SUV struck the rear of a flatbed tow truck at 12:35 a.m. The tow truck was in the left lane with its lights flashing while assisting another car that had crashed, Police Chief Joe Mokwa said.

Hancock died upon impact, Mokwa said. The driver of the tow truck, whose name was not released by police, was in the truck at the time of the crash but was not injured. Mokwa said the truck driver saw Hancock’s SUV swerve just before it hit the tow truck, which weighs about 26,000 pounds.

Mokwa said it appeared Hancock was driving at or just above the speed limit, and there were no alcohol containers in his vehicle.

“We may never know what occurred,” Mokwa said. “It appears that he just merely didn’t see the tow truck.”

The medical examiner’s office said an autopsy had been scheduled. Services were scheduled for Thursday in Tupelo, Miss.

“All of baseball today mourns the tragic and untimely death of St. Louis pitcher Josh Hancock,” baseball commissioner Bud Selig said. “He was a fine young pitcher who played an important role on last year’s World Series championship team.”

The Cardinals will wear patches with Hancock’s No. 32 on their sleeves for the rest of the season. The team also planned a memorial for the bullpen, which already features a tribute to Kile.

General manager Walt Jocketty said the Cardinals, who will be off Thursday, plan to charter a plane to the funeral. The team will begin a three-game series in Milwaukee on Tuesday and return to St. Louis on Friday.

“Obviously, this is very difficult for all of us, especially those of us who were here five years ago when we lost Darryl Kile,” said Jocketty, his eyes red. “There’s no way we could have played tonight’s game.”