Wieters, the fifth overall pick in the 2007 Draft out of Georgia Tech, is hitting .239 with three home runs and 10 RBIs in 33 games with the big league club. He's in an 0-for-12 slump and has gone 2-for-23 in his last six games since his five-game hitting streak ended.
The 23-year-old is waking up in a new city every few days and adjusting to the routine. That will include advance meetings for New York, perhaps the league's most dangerous lineup.
"Once you see hitters behind the plate, you can get a little bit of a feel for them," Wieters said, "but until then you're pretty much going on videotape and you're pretty much going on scouting reports."
While Wieters is gathering impressions and observations, the Orioles are 13-19 this season against teams within their own division.
"We always get up to play Boston and New York. If you don't, you need to go home," said Gregg Zaun, Wieters' backup. "We're going to go out there and play them tough, like we always do."
Wieters once worked out at Fenway Park as part of a Cape Cod League showcase. He then watched a Red Sox game afterward but acknowledged that "Fenway's a little bit different with the stands filled."
"It will be a different atmosphere this time I'm sure," Wieters said. "It will be fun and exciting to see those stadiums."
BAL: RHP David Hernandez (2-2, 3.94 ERA)
Hernandez was optioned to Triple-A Norfolk after his last start in order to provide some positional flexibility for the Orioles, and he'll return to start Baltimore's series opener at Yankee Stadium. Hernandez has pitched into the sixth inning in four of his first five starts and has allowed more than three earned runs just once. The right-hander was a strikeout artist in the Minors but has yet to whiff more than five in a big league game.
NYY: LHP Andy Pettitte (8-5, 4.85 ERA)
Pettitte opens up his second half coming off two losses. The left-hander went just 4 1/3 innings on July 11 at Anaheim, allowing six runs on seven hits in a 14-8 loss to the Angels -- the second straight time he allowed six runs, having also been rattled by the Blue Jays in a 7-6 loss on July 6 at home. He is 1-2 with a 7.29 ERA in his past four starts. This will be the veteran's first start of the season against the Orioles, against whom he was 3-0 with a 1.93 ERA last season.
For Hernandez, this will be his first career start against New York. ... Aubrey Huff hit his 11th homer on July 3 and is one homer shy of 200 for his career. ... Brian Roberts is 9-for-22 (.409) in his last five games. ... Nolan Reimold came out of the All-Star break by hitting.400 (6-for-15) with two doubles and three RBIs in the Chicago series.
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Tuesday: Orioles (Rich Hill, 3-2, 7.22) at Yankees (Sergio Mitre, 5-8, 4.65 in 2007, DNP in '08), 7:05 p.m. ET
Wednesday: Orioles (Jason Berken, 1-7, 6.44) at Yankees (A.J. Burnett, 8-4, 3.81), 1:05 p.m. ET