ANAHEIM -- A's lefty Brian Fuentes criticized Bob Geren's "unorthodox managing" after the club's 4-1 loss to the Angels on Monday and noted the skipper has "zero" communication with him, making for a "pretty drastic difference" when comparing past managers.

The 35-year-old veteran reliever, owner of 196 career saves on five Major League teams, suffered his fourth loss in as many appearances on Monday and his career-high seventh of the season when he was brought into a 1-1 game and watched his baserunner score the Angels' go-ahead run on Torii Hunter's double off righty Michael Wuertz.

It marked the fourth straight tied-game situation for Fuentes and the third consecutive on the road, the first two coming in San Francisco. He hasn't had a save opportunity since May 8.

"There's just no communication," he said. "Two games on the road, bring the closer in a tied game, with no previous discussions of doing so. And then, tonight, in the seventh inning, I get up. I haven't stretched, I haven't prepared myself. If there was some communication beforehand I would be ready to come into the game -- which I was, when I came into the game, I was ready. Just lack of communication. I don't think anybody really knows which direction he's headed."

Normally reserved for the most part, Fuentes said his unsettled feelings about Geren's managerial style surfaced just recently, as influenced by the happenings in San Francisco.

"I think the games in San Francisco were some unorthodox managing," he said. "I thought it was maybe the National League thing, that maybe that had something to do with it, but tonight was pretty unbelievable."

Fuentes has acted the part of closer in Andrew Bailey's absence this season, but before Monday's game, Geren was questioned about that role.

"I can use anybody late in the game," Geren said. "It's been that way. Everybody knows that."

Fuentes, though, has clearly been the go-to guy in save situations, having racked up nine saves -- good for fifth in the American League -- in 11 opportunities. And he directly made it known on Monday night that Geren told him at the beginning of the season that he is, in fact, the club's closer.

"Yes, from get-go, I've been closing," he said.

Thus, when asked what went through his mind when the phone rang in the seventh inning in Anaheim, Fuentes admitted thinking bullpen coach Rick Rodriguez "misspoke."

"I thought it was some sort of miscommunication, but he said, 'No, you're up,' so I got up and cranked it up," he said. "You can't try to guess along with them. Very unpredictable."

The lack of communication should change, Fuentes admitted, before adding, "It's not my decision."

"I can't predict the future," he said. "If he decides to take that step, then there will be communication. If not, I'll make sure I'm ready from the first."

Does the air need to be cleared with Geren?

"Some people might think so," Fuentes said. "At this point, I have nothing to say."

The southpaw's comments come in the midst of an already frustrating time for the A's, who have lost six straight games. Geren, who was addressed before Fuentes' briefing with reporters but not after, said he used the lefty in the eighth because the upcoming at-bats for Angels hitters Erick Aybar and Bobby Abreu were "perfect for a left-hander."

"You figure you go with him for a couple guys," Geren said. "If he gets them both out, maybe let him try to finish the inning. If not, you have your right-hander for Hunter."

Blevins designated to make room for Outman

ANAHEIM -- Hoping to halt a season-high five-game losing streak, the A's on Monday looked to a familiar face on the mound in the opener of a three-game set against the Angels.

The club recalled lefty Josh Outman from Triple-A Sacramento to take the injured Brandon McCarthy's rotation slot and designated Jerry Blevins for assignment all the while keeping him on the 40-man roster.

It marks Outman's first Major League appearance since June 19, 2009, when he left his start with a strained left elbow following a solid showing via a 4-1 record and 3.48 ERA. The southpaw underwent Tommy John surgery later in the month and missed the entire 2010 season.

Outman, 26, was a potential fifth-starter option in camp this year after a lengthy rehab process but struggled with mechanics and command, which led to his demotion. He went 4-1 with a 4.78 ERA in eight starts for Sacramento, walking 27 and striking out 30 in 37 2/3 innings.

A's manager Bob Geren said Outman is stretched out enough to avoid any pitch-count limitations and noted he hopes to see the same successful results from the southpaw as he did from right-handed reliever Joey Devine, who traveled a similar Tommy John surgery rehab path and has tallied two shutout innings since his Friday promotion.

"I talked with Josh quite a bit today, and I talked to [Sacramento manager] Darren Bush about him," Geren said. "He's excited because it's been a long road for him coming back. He was somewhat healthy in the spring, but he needed to improve his game, and hopefully it's the same story we saw with Devine. He came up, after battling a long road, and threw the ball well for us."

Outman, sporting No. 88, represents one of two new additions to the A's rotation, as Geren announced on Monday that right-hander Guillermo Moscoso has earned Tuesday's start in place of Tyson Ross.

McCarthy (shoulder) and Ross (oblique) are expected to miss at least a handful of weeks, giving Outman and Moscoso plenty of time to prove their big league worth.

Blevins, meanwhile, made just one appearance in his three-day stint with the A's -- his second of the season -- before Monday's designation. The lefty is expected to return to Sacramento.

A's to recall Moscoso for start on Tuesday

ANAHEIM -- The A's on Monday filled out 40 percent of their previously depleted rotation, calling upon Josh Outman to start their series opener in Anaheim before manager Bob Geren announced right-hander Guillermo Moscoso will get the nod Tuesday, marking his first Major League start.

Moscoso has not officially been brought on board, but the 27-year-old Venezuelan hurler is expected to join the 25-man roster on Tuesday, when the A's are likely to option a member of their eight-man bullpen to make room.

Moscoso, who is already on the team's 40-man roster, boasts big league experience in the bullpen, having made 11 appearances with the Rangers, including 10 in 2009 and one last season. Acquired from Texas for another Minor League pitcher this offseason, the righty compiled a 3-2 record and 4.02 ERA in eight games -- seven starts -- for Triple-A Sacramento.

"He's been pretty consistent," Geren said. "He's throwing strikes, and he's ready to go. He has a good breaking ball, and when he throws it at the right speed, it's pretty good. He throws a changeup any time and has pretty good command of his fastball. He's off to a decent start."

Moscoso will take the rotation spot of Tyson Ross, who suffered a left oblique strain just seven pitches into his start on Thursday.

Jackson makes first career start at third for A's

ANAHEIM -- Conor Jackson's expected role as a reserve outfielder for the A's has already expanded immensely in the first two months of the season, and the latest proof was on display Monday, when he received his first career start at third base.

With Kevin Kouzmanoff nursing a right groin strain and veteran Mark Ellis in need of a day off after starting 10 consecutive games, manager Bob Geren inserted Andy LaRoche at second base while giving Jackson the hot corner.

Jackson is no stranger to the position, though, having made four Major League appearances there in late innings, including twice this season and twice in 2007 with the D-backs. Even more, he's been warned that his presence might be needed there.

"I've been out there the past four weeks, knowing that a situation like this could come up," he said before Monday's game. "Especially with Kouz out and Ellis playing quite a few games recently, it seems like if there's any time to do it, this is a perfect time.

"It's not like I'm being thrown into the fire here. I've had time to take ground balls, and I'm going to take it like any other position. It's a little anxiety, more than anything. But I'm sure once I get that first ground ball, I'll be fine."

Jackson has started 23 games at four positions -- including 13 in right field, five in left field and four at first base -- and is realizing that his versatility has led to a good chunk of playing time after being limited to just 90 games over the previous two seasons because of illness and injury.

"The chance to be able to play more than I expected is really nice," he said. "It's hard to sit for a few days in a row, and obviously we've got a great group of bench guys."

"He's worked hard the past month for the possibility that this would happen," Geren said. "Once you get into the game, that's where the real experience comes. He's played first and played extremely well over there, and it's pretty much the same thing, he just has to throw the ball this time. And he throws the ball well anyway. He has a good arm."

Kouzmanoff, Geren said, was not available for Monday's game, but he took a handful of ground balls and participated in batting practice earlier in the day.

Worth noting

• Right-hander Andrew Bailey (forearm), making his second rehab appearance for Triple-A Sacramento on Monday, struck out one and hit a batter while throwing 13 pitches -- eight strikes -- in a scoreless seventh inning.

• Ryan Sweeney drew a start in left field over regular Josh Willingham on Monday because of his exceptional career numbers against Angels starter Jered Weaver, manager Bob Geren said. Sweeney entered the game 7-for-20 lifetime against the right-hander.