SEATTLE -- Orioles manager Dave Trembley reached his limit. He's not making excuses for his players anymore.

The third-year skipper, whose team lost 13 of its first 15 games, called a 12-minute meeting before Wednesday's game with the Mariners. His message was to remind the players that they are Major Leaguers and needed to play like it.

"It's not OK at all. I'm tired of covering for them," Trembley said. "I'm in a position where I'm a real nice fellow, and I'll cover, and I get questions point blank. I feel like a [darn] presidential press secretary sometimes, instead of telling what I have to say to smooth it over. I'm not smoothing it over anymore."

The Orioles' batters are not coming through as they should. For the season, they have just 16 hits in 107 at-bats (.150) with runners in scoring position, lowest in the Majors.

During Tuesday's 3-1 loss to the Mariners, the leadoff batter connected for a double in two different innings, but in neither case did the runner advance.

"We're not doing the things that are necessary to win baseball games at the Major League level," Trembley said. "I think it has been too repetitive for the first 15 games. And I don't want any excuses any more, that this guy is hurt or we don't have that guy. No one is feeling sorry for us.

"We've dug ourselves a hole, but it's not insurmountable. We're not going to give in or give up, but I'm not going to just let things just slide and say it's OK to accept for us getting our [tails] kicked."

Trembley said what's frustrating to him is how the players stray from the fundamentals.

"The reminders always have to be there," he said. "This is a game of basic repetition -- the approach, attitude, focus, execution. It's easy to get off track in this game because it's such a highly skilled game. You have to remind people what they need to do to get it back.

"It just goes to show, take nothing for granted. Everyone needs a reminder now and then. Sometimes a reminder might not be in a way that is as pleasant to hear."

It's not just the hitters that have his attention. He said the pitchers have not stayed with the approaches laid out before each series.

"I thought our plan made it pretty clear," Trembley said. "[But] what I saw [Tuesday] didn't sit well with me. You know I'm not talking to a wall. .... Then you see the pitchers pitching totally different than what we want.

"It hasn't been acceptable. I'm very patient, but I tell you the truth, I didn't have anybody disagree with what I said."

Trembley said that this team can turn it around and begin winning, "but in order to do that, you have to get your priorities straight.

"I shouldn't have to talk to guys at the Major league level about some of the very basics," he said, "but they were addressed."