Trembley had a bunch of conversations with La Russa this spring and said he learned a lot from talking to the Cardinals skipper.
"I got to know Tony real [well]," Trembley said. "We had some real nice conversations about getting second-guessed. I wish I would have done this or I wish I would have done that. La Russa said, 'Don't beat yourself up over it. If your decisions are well thought out before the game, you're [fine].'"
Trembley said all of this ties into his theories on the importance of pregame preparation. He said that La Russa and Detroit manager Jim Leyland, both of whom have won World Series titles, made clear the importance of being ready for anything.
"It's about preparation," Trembley said. "This is the big leagues, and no one understands that more than me from where I have been. If you don't do your homework and you're not prepared, think out every situation ahead of time -- Leyland's told me the same thing -- then when you make your decision, live with it."
Trembley said that a manager can't allow himself to be consumed by worrying about his decisions. The players win the game, Trembley said, he can just have an effect on it.
La Russa also said that if the manager gets the team ready to go, then he's done a good job.
"He said don't look at yourself as a failure if you lose," Trembley said. "Don't' look at yourself like it was you who failed, because if you do everything you can possibly do, [that's it]."
Trembley is starting his first full season as the Orioles' manager. He took over from Sam Perlozzo on June 18 last year, after managing for 20 years in the Minors and working 22 years in professional baseball.
The injury-riddled Orioles went 40-53 under Trembley last year and started 4-1 this season. Trembley said that he's always looking to learn how to do his job better and appreciated La Russa's advice.
Jeff Seidel is a contributor to MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.