With a 5-2 loss to the Chicago White Sox on Saturday night, the Tigers (34-100) joined the 1962 Mets as the only teams in the modern era to lose 100 before September.
"This really doesn't hurt any more than the others," Tigers manager Alan Trammell said. "I know it is a round number, but that doesn't mean anything to me. We competed and we played pretty well, so it isn't as painful as a lot of them."
Frank Thomas and Carlos Lee homered for the White Sox and combined to drive in five. Chicago again is alone in first in the Central.
"We have to keep the blinders on and just worry about ourselves," manager Jerry Manuel said. "We've just got to run our race."
Mike Maroth took the loss and is one defeat from becoming the first pitcher since Oakland's Brian Kingman in 1980 to lose 20 in a season. Kingman reportedly is planning to attend Maroth's next start.
"I really don't care about 20 at this point," Maroth said. "I don't want my next start to be a circus, but that's probably what's going to happen. I just have to deal with it."
Maroth, expected to start Thursday against Cleveland or Friday in Toronto, allowed five runs on eight hits and two walks in 61/3 innings.
"He's going to make his start; we just aren't sure when we will be going to a six-man rotation," Trammell said. "I didn't think he pitched too badly tonight. I certainly don't think we have any better options than Mike with a month left in the season."
MARINERS 13, ORIOLES 1: The Mariners' biggest inning of the season shocked even themselves.
Carlos Guillen had two doubles and three RBIs in a 10-run fifth, leading Gil Meche to his first win in four starts for host Seattle.
"That was big for us," first-year manager Bob Melvin said of the Mariners' fifth. "We've had trouble putting any crooked number up there lately. To put two numbers up there in one inning, that's pretty good."
Seattle scored all 10 with two outs, and five came after third baseman Tony Batista's fielding error. The inning was a run shy of the club record, last done in 1984.
The Mariners went in with eight losses in 10 games, which included a season-worst six-game losing streak.
TWINS 2, RANGERS 0: Johan Santana pitched six shutout innings before leaving with a left hamstring injury, and Shannon Stewart drove in two for visiting Minnesota.
Santana allowed five hits to win his sixth straight decision. Santana, 8-2 in 13 starts this season, struck out four and didn't walk a batter.
Santana went out to warm up for the seventh but was favoring his left leg.
BLUE JAYS 9, INDIANS 3: Frank Catalanotto hit a three-run homer and former Rays pitcher Cory Lidle got his first win in more than a month for visiting Toronto.
Catalanotto hit the second pitch from reliever Rafael Betancourt into the Blue Jays bullpen in rightfield for his 11th homer to cap a four-run sixth and give Toronto a 5-1 lead.
Lidle, in his second start since missing three weeks with a strained left groin, got his first win since July 25.
ANGELS AT ROYALS, PPD.: The rainout was scheduled as part of a doubleheader today starting 1:05 p.m.