Detroit ? Jim Leyland is out of answers.

Not only did his division-leading Detroit Tigers drop a fifth straight game to the last-place Kansas City Royals, 11-1, on Tuesday night, he has to fill another spot in his patchwork rotation.

Jarrod Washburn lasted just one inning — the shortest start of his career — and gave up four runs before it became obvious that his sore left knee wasn’t up to pitching. The Tigers lost Nate Robertson (groin) and Armando Galarraga (elbow) last week, while Dontrelle Willis and Jeremy Bonderman have been unavailable for almost the entire season.

“I don’t have any information for you right now, because I don’t have any information for myself,” Leyland said. “I have no idea who is going to pitch. We’ll get together and try to figure something out.”

Washburn (9-9) struck out David DeJesus to start the game, but Willie Bloomquist doubled and Billy Butler and Miguel Olivo walked to load the bases.

A passed ball allowed the first run to score before Alberto Callaspo hit a three-run homer into the Kansas City bullpen in left-center field.

“When you’ve got a pitcher on the ropes like that, you have to finish him off,” DeJesus said. “Even though he’s hurt, we still have to play the game.”

Washburn finished the inning, but was replaced by Zach Miner for the second, and fell to 1-3 with a 7.33 earned-run average in eight starts since being acquired from Seattle on July 31.

“Shortly after the strikeout, we could tell he was in pain,” Leyland said. “We’ll see what happens, but it seems pretty obvious to me that, at this point, he’s unpitchable.”

The win was Kansas City’s fourth over Detroit in the last eight days, and Robinson Tejeda’s second in less than a week.

“The Tigers aren’t as at full strength as Jim would like them, and we understand that,” Kansas City manager Trey Hillman said. “But they are still playing for something, and we don’t feel sorry for them, just like no one feels sorry for us for being in last place.”

Tejeda (3-1) allowed one run and two hits in five innings after shutting them out for six innings on Sept. 9.

“I don’t think I’m an ace or anything like that,” Tejada said. “I’m just going out there and throwing the ball, and I’ve gotten the opportunity to beat them two times in a week.”

Detroit had its only chance to get back into the game in the third inning, putting runners on second and third with one out. Tejeda, though, got Carlos Guillen to pop out and Magglio Ordonez to fly out.

DeJesus made it 7-0 with a three-run homer off Casey Fien in the fourth, and Olivo added an eighth run in the fifth when he tripled and scored on Callaspo’s sacrifice fly.

The Tigers got on the board on Guillen’s RBI single in the bottom of the fifth, but Tejeda struck out Miguel Cabrera with the bases loaded to end the inning.

“He gets a lot of swings and misses because there’s such a difference between his fastball and his changeup and because his curveball is moving all over the place,” Royals catcher John Buck said. “Once we got off to the big lead, he loosened up.”

Olivo hit Kansas City’s third three-run homer off Bonderman in the seventh, ending Detroit’s hopes of a second straight late-inning rally. Detroit beat Toronto, 6-5 in 10 innings, on Monday, scoring three times in the ninth and once in the 10th.