Bonderman blew an early three-run lead, and the Seattle Mariners went on to beat Detroit 4-3 Tuesday night, cutting the Tigers' lead to just four games over Minnesota. The Tigers, who have lost nine of 13, had a 10-game edge in the division on Aug. 8.
"This is my fault," he said. "I'm the starting pitcher, and it is my job to keep us in the lead. I didn't do that."
Bonderman is 0-3 in his last eight starts since his previous win on July 24.
"Jeremy has been a little sluggish for whatever reason, and we have to get him out of it," Tigers manager Jim Leyland said. "We need him bad."
Joel Pineiro (8-11) came on after a long rain delay and worked 3 2/3 innings of perfect relief to help the Mariners to just their second win in 16 road games.
"I kept the ball down, and they made some great plays behind me," Pineiro said. "We've still got something to play for -- spoiling other teams."
Pineiro, who came into a 3-3 game to start the fifth inning after a 1 hour, 23-minute delay, retired all 11 batters he faced. He struck out four.
"He was great," Tigers center fielder Curtis Granderson said. "But we're going to be facing a lot of great pitchers from here on in, and we have to find a way to hit them."
J.J. Putz got the final four outs for his 30th save. The first batter he faced, Magglio Ordonez, reached on an infield single, but tried to advance on a wild throw. He didn't slide, and was thrown out by catcher Kenji Johjima, who had backed up the play at first.
Ordonez declined comment.
"Walking that guy killed me," said Miller, who only allowed one hit in two innings. "I can't be happy when I give up the winning run."
Leyland, though, was impressed by Miller, who made his home debut just three months after being selected in the draft.
"He was fantastic," he said. "The walk was a mistake, but he threw the ball extremely well."
Seattle's four runs scored on a bloop single, an error and two groundouts.
"We put the ball in play," Seattle manager Mike Hargrove said. "That made things happen."
Both starting pitchers left after the rain delay. Bonderman and Jake Woods both allowed three runs in their four-inning stints, although one of Bonderman's runs was unearned.
Detroit took a 3-0 lead in the first. Granderson led off with a triple and scored on Craig Monroe's single. Marcus Thames walked, and after Ordonez flew out, Ivan Rodriguez hit a two-run double off the scoreboard in right-center field.
The Tigers, though, only managed two more hits off Woods.
"After the first inning, I found my groove and started throwing well," Woods said. "Then the rain started to fall and that was the end of my night."
The Mariners tied it with three runs in the fourth when the rain came down steadily.
With one out, Raul Ibanez singled and moved to third on Richie Sexson's ground-rule double. Bonderman walked Broussard to load the bases, and Johjima's bloop single made it 3-1.
Brandon Inge then misplayed Beltre's grounder to allow a second run to score, and Jose Lopez tied the game with an RBI groundout.
"I've got to do a better job of giving us a chance to win than I've done lately," said Bonderman, who has a 5.13 ERA in his winless streak. "This is going to be a dogfight down the stretch, and we have to find a way to hold our ground."
- Miller made his major-league debut last week at Yankee Stadium.
- The game drew 23,583 fans, Detroit's smallest home crowd since only 20,935 came to the June 13 game against Tampa Bay.
- The Tigers recalled OF Brent Clevlen from Double-A Erie. Clevlen hit .379 in 12 games with Detroit earlier this season.
- The Mariners had lost 10 of 12 to Detroit.
- Putz became the fifth pitcher in Mariners history to record a 30-save season, joining Kazuhiro Sasaki, Eddie Guardado, Mike Schooler and Jose Mesa.