Trembley won't match batterymates
Baltimore (46-65) vs. Oakland (49-62), 7:05 p.m. ET
TORONTO -- Orioles manager Dave Trembley said in July that he would not pair pitchers and catchers. At the time, rookie Matt Wieters was backed up by veteran Gregg Zaun.
Since then, Zaun has been traded and Chad Moeller has been called up from Triple-A Norfolk to take his place. Earlier in the season, the Orioles had experimented with the idea of having a personal catcher. That included possibly having Moeller catch Jeremy Guthrie, who will start Monday's game against Oakland.
However, Trembley reiterated that Wieters will be the team's everyday catcher, regardless of who is pitching.
"I plan on catching Wieters more, but I don't plan on matching up any particular catcher with any particular pitcher," Trembley said. "I tried to say that earlier when Zaunie was here, without being disrespectful towards anybody. Wieters is going to be the catcher here for a long time. Wieters is going to be the guy. I think Wieters needs to have as many opportunities as we can give him to familiarize himself with everybody on this staff."
Guthrie, 30, is the veteran of the team's staff, but he could have a number of years pitching for the Orioles ahead of him -- with Wieters behind the plate. Given the ages of Baltimore's other starters -- five rookies have made and won their Major League debuts with the O's this year -- Wieters likely will spend a lot of time catching them.
"We think the strength of the organization moving forward is going to be young starting pitching," Trembley said.
"That's why [Wieters is] here. He's going to catch these guys. ... That's why he's catching. That's why he's going to learn what it takes to catch a day game after a night game, because he's going to do it."
Trembley added that he plans to have Wieters catch six days a week -- instead of the five he's been used to -- if the 23-year-old rookie can handle it physically.
"We have done a good job monitoring his progress," Trembley said. "We've given him some days off and said, 'Look, you're going to catch 130 games a year.' ... Maybe more, if he is what [we think] he is. [Joe] Mauer and [Jason] Varitek and other guys that are premier players in the league -- they catch."Pitching matchup
BAL: RHP Jeremy Guthrie (7-11, 5.28 ERA)
Guthrie pitched well in his last start, when he allowed just one run in the first seven innings. The right-hander buckled for two more in the eighth, but he still got deep in the game. Guthrie, who has allowed more home runs (27) than any American League starter, has given up at least one long ball in six straight starts and 17 of his past 22 games. OAK: LHP Gio Gonzalez (3-2, 6.31 ERA)
Gonzalez matched a career high by going 6 2/3 innings on Tuesday, allowing three hits while striking out seven to lead the A's to a 6-0 win over the Rangers. The 23-year-old rookie is 2-0 with a 1.93 ERA in 18 2/3 innings over a three-start stretch against the Yankees, Red Sox and Rangers. "Those are three high-quality hitting clubs," Oakland manager Bob Geren said. "He's been simplifying his whole game plan. ... It's what he needs. He's very young. He needs that confidence." Tidbits
Left-hander Brian Matusz gave up his first home run in the Major Leagues on Sunday. The second-inning solo shot by Blue Jays first baseman Kevin Millar was followed by a pair of two-run homers in the third as Matusz suffered his first big league loss. ... With a single to right field in the sixth inning on Sunday, right fielder Nick Markakis has reached base in 30 straight games. That marks the longest active such streak in the Majors. ... The Orioles have allowed 141 home runs this season -- the highest total in the AL. Tickets
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Tuesday: Orioles (David Hernandez, 3-4, 3.96) vs. Athletics (Trevor Cahill, 6-11, 5.13), 7:05 p.m. ET
Wednesday: Orioles (Jason Berken, 2-9, 6.72) vs. Athletics (Vin Mazzaro, 3-8, 5.70), 1:35 p.m. ET
Erika Gilbert is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.