OAKLAND -- The A's Major League-leading 13 walk-off wins get all the attention, but their MLB-worst 13 shutouts are cause for concern. The latest shutout came at the hands of Angels ace Jered Weaver who blanked the A's bats for nine innings of four-hit ball. By defeating the A's 4-0, Weaver earned his MLB-leading 15th win -- his ninth win in as many starts. He simply tormented the A's lineup."To be honest extremely frustrating," Derek Norris said of facing Weaver. "I could count five or six times where I fouled a ball right down the middle just straight back. There's something about his deception that throws you off."Norris was the only batter not named Brandon to collect a hit for Oakland. Brandon Inge had two of the A's four hits and Brandon Moss collected the other one. Inge connected for a double, the only extra-base hit Weaver allowed all night. "He kept us off balance all night," A's manager Bob Melvin said. "Both sides of the plate. In between fastball and change-up, enough sliders, a few curveballs, he was really good tonight." The Angels Jered out-dueled the A's Jarrod. Parker allowed four runs over six and two-thirds innings. The rookie pitcher allowed two runs in the second inning and two more in the seventh. The big blow for the Angels came in the form of a two-out, two-run Torii Hunter single on a slider that was left up in the zone. "That's a pitch he's been swinging through all day and he made an adjustment and I didn't put it where I needed to," Parker said. "If it's down and away he swings though it again. It's just that the execution wasn't right. It's the right pitch, not the right spot."Parker pitched pretty well all things considered. He was locked in from the third to the sixth inning, a good sign considering he is 2-3 with a 5.95 ERA in his last six starts. His previous 13 starts he was 5-3 with a 2.46 ERA. The A's had to contend with the Angels' All-World rookie phenom Mike Trout. The rookie of the year frontrunner reached base in four of his five plate appearances and swiped a career-high tying three bases. He leads the American League with 36 stolen bags. "He fast," Norris said eliciting a chuckle. "He's a terrific player. He's really got all five tools. It's kinda cool to be out there seeing him play. Unfortunately he's on the other side of the team which sucks." "He wreaks havoc out there," Parker said. "He's a good player, he's scary and he's going to continue to get better."One of the lone bright spots for the A's was when Josh Reddick gunned down the speedy Trout as he attempted to stretch a single into a double. Reddick's throw beat Trout to the bag and shortstop Eric Sogard's glove skimmed across the tips of Trout's fingers as he slid headfirst into second. It was Reddick's 13th outfield assist which leads Major League Baseball. The last A's outfielder to reach 13 assists was Matt Stairs in 1999. While Weaver is 10-0 in his last 12 starts, Tuesday's starting pitcher C.J. Wilson is winless in his last seven outings. Wilson blanked the A's for eight shutout innings on May 22 at the Coliseum in his last trip here. Wilson is notorious in Oakland for his harsh comments about the A's mound and fans. The A's might be catching him at the right time.