Orioles left-hander Wei-Yen Chen is still acclimating to the nuances of Major League Baseball.

Case in point: On Thursday, the 26-year-old Taiwan native allowed just four hits in five innings against the Minnesota Twins in an 11-1 victory. Two of those hits — including a RBI double — came off the bat of Joe Mauer, former American League Most Valuable Player and perennial all-star catcher.

What did Chen think about facing Mauer?

"He doesn't know him," said Chen's interpreter, Tim Lin, as the media corps laughed.

Chen quickly responded, though, with: "It's a great experience for me to learn Mauer and the other players because they are really great hitters to me."

Chen also quickly responded on the mound after giving up two doubles in the first. Once Mauer drove in Ben Revere on a double that left fielder Nolan Reimold should have caught, Chen retired 13 of the following 15 batters he faced. He was removed in the fifth after throwing 72 pitches (43 for strikes) so that others could get some work. He threw 10 more pitches afterward in the bullpen.

"There's room to improve, and to work on my off-speed stuff," said Chen, who pitched the last four seasons with the Chunichi Dragons of the Japan Central League.

Statistically, it was his best outing so far— he walked none and struck out one —but he says he's glad there's still time before the games count.

"I'm really excited for the season to start, but right now I only have 70 pitches [Thursday] ," he said. "I want to get more pitches for my next start or my next two starts, so I can get ready and maybe get in the rotation when the season starts."

Chen is considered a potential option to start Opening Day, April 6, against the Twins, but he said that is not in his mind.

"Not really, because this is my first year," he said. "The only thing I want to do is the best for me and the best for the team. So right now, just do my best every day."

Wada throws in minor league game

Orioles left-hander Tsuyoshi Wada came out of his second spring start Thursday confident that the elbow problems that have hindered his bid for a rotation spot have subsided.

He threw 47 pitches in three extended innings (10 outs) in a Double-A minor-league game at Twin Lakes Park.

Asked afterward if he believed the left elbow discomfort that crept up in the second week of camp is a thing of the past, the Japanese-born Wada, who normally speaks to the media through an interpreter, didn't need any help delivering his message.

"No problem," he said to reporters in English.

With two weeks remaining until Opening Day, Wada believes he still has a chance to make the Orioles starting rotation.

"I still think there's a chance, but it's up to the manager and I'll do what the manager says," Wada said through interpreter Danny McLeith. "They're having me throw multiple innings and letting me sit down and go back out there and keeping an eye on my pitch count, so I think they're looking at me as a starter. I really don't know, though."

Wada's fastball topped off at 87 mph on Thursday, lower than the 88-90 shown regularly on the stadium scoreboard in his first outing Sunday. But Wada said his control was better this time out, as were his off-speed pitches.

"The last time I went out, some of the off-speed pitches got away from me," Wada said. "The curve got up, the change up sneaked away from where I was aiming at the end there. We saw the same thing in the first inning [Thursday], but I fixed it in the second and third inning and I feel like I had a good off-speed repertoire [Thursday] ."