BOSTON -- Tim Wakefield and Bobby Jenks were both watching video after Sunday's 3-2 win over the Mariners at Fenway Park.

To Jenks' surprise, Wakefield wasn't only watching his own footage. Wakefield was watching Jenks', too.

"We were watching separate," Jenks said after another bad outing on Sunday. "I didn't even know he was looking at it, and he picked it up right away, too."

The "it" is a flaw Jenks said has been identified in his mechanics. Jenks' velocity is there, but he's showing little control, so it's believable that something's wrong. He allowed a hit, walked three straight and threw a wild pitch in the sixth inning on Sunday, turning a 2-0 Red Sox lead and a potential win for Wakefield into a tie game and a no-decision for the 44-year-old.

Instead of being bothered by Jenks' performance, Wakefield tried to help the right-hander, whose ERA is 9.35.

Jenks, a seven-year veteran, had never walked three batters consecutively before Sunday, and he had only walked three in an appearance twice before: once last season, and once in 2006.

Outside of that '06 season, when he walked 31, Jenks hasn't finished a season with more than 20 free passes. He averages 2.97 strikeouts for every one walk lifetime.

"With this, hopefully it's a quick fix," Jenks said. "Everything's there -- I mean, we're talking a few inches here. That could make a big difference out on the field. I've always been a guy that was known for throwing strikes and my walks have always been low. This is very uncharacteristic, and we found the reason why."

The problem Jenks said is that he's "coming off the ball."

"When you pitch, you want to keep your shoulder squared to home plate and basically drive your forehead to the catcher," he said. "And right now, I'm taking my head towards our dugout."

Jenks said he would do side work to correct the flaw during batting practice starting Monday -- he doesn't want a breather.

In his last three appearances, Jenks has gone an inning each time and been charged with a combined four runs. Though one of the two runs that scored while Jenks was on the mound Sunday was officially tacked on to Wakefield's ERA, it was still Jenks' in spirit.

"Well obviously I feel bad," Jenks said of spoiling a potential Wakefield win. "I don't want to say it's part of the game, but yeah. I don't know. I feel like [crap]. What can you say?"

Apparently, Jenks' mechanical discovery was made so soon after the game that pitching coach Curt Young didn't know about it. Talking to reporters shortly before Jenks did, Young said there wasn't a mechanical problem with Jenks, merely that he had lost his feel. That could certainly be the case as well.

"I don't think it's mechanics, it's just a feel really every pitcher gets throwing a baseball," Young said. "You lose that touch on occasion."

Lester to go Tuesday as Sox check on Beckett

BOSTON -- The Red Sox announced on Sunday that Jon Lester would pitch on regular rest on Tuesday against the Angels, a day that logically might have been Josh Beckett's to pitch. No starter for Wednesday or beyond has been announced.

Beckett is to throw a side session on Monday, although pitching coach Curt Young said there's nothing physically wrong with Beckett -- even though Young said the Red Sox want to check up on his health.

"No, no," Young said. "Just make sure his body's feeling good and health-wise he's good. ... He's going to be good. Once we get through this side [session] tomorrow, we'll go from there."

Young said Beckett's pitch count was scaled back his last time out in Baltimore, when he gave up four runs in six innings. He threw 93 pitches after throwing 126 pitches in the start before that, in Anaheim. The Anaheim start was the last in a string of three in which Beckett was dominant.

A stomach ailment for Clay Buchholz pushed his start back a day, from Sunday to Monday. In a simple world, everyone that followed Buchholz previously would also be pushed back a day: Beckett to Tuesday, Lester to Wednesday, Daisuke Matsuzaka to Thursday and John Lackey to Friday.

Matsuzaka, though, left Friday's game because of right elbow tightness, complicating matters. Manager Terry Francona said the team is merely considering re-alignment.

"We may take this opportunity to tweak our rotation a little bit," he said. "That's just kind of where we're at -- put everybody in the best position possible. We'll get to it."

A month into the season, this is the second time the Red Sox have seen a shift in their rotation. Lackey pitched on 10 days' rest on April 19, after a rainout complicated matters.

Youk held out of Red Sox's lineup to rest hip

BOSTON -- Red Sox third baseman Kevin Youkilis was given the day off on Sunday to rest his sore left hip, as was expected in the day game after a night game.

"[It's a] little sore," manager Terry Francona said Sunday morning. "I think we thought that unless he was really feeling good, we were going to hold him out today. We talked to him early, and after talking to the trainers last night, I think we all thought if we could give him a day today, it won't linger."

Youkilis first hurt the hip sliding on Thursday in Baltimore, but felt well enough to start Friday and Saturday. It flared up on him after a seventh-inning double Saturday night in a 2-0 Red Sox loss.

"It's all right," Youkilis said after Saturday's game. "It's a little tight and hopefully another night it'll be a little better."

Francona said no further tests were needed on Youkilis' hip.

"We know what it is," he said. "What do you want to do? His hip's sore."

Okajima finding command of changeup

BOSTON -- The Red Sox couldn't find a big hit anywhere on Saturday in a 2-0 loss to the Mariners, but the game would not have remained close from start to finish were it not for left-hander Hideki Okajima.

The first reliever Boston turned to Saturday, Okajima threw 1 2/3 perfect innings, striking out one. He's thrown three hitless outings since allowing three runs in his first appearance of the season on April 19 in Oakland.

"He commanded better, threw a couple good changeups," manager Terry Francona said. "Again for him, the changeup is so important, because it's right off his fastball. That breaking ball is not probably a real put-away pitch. The changeup's always been real important. When that comes out and he locates it off his fastball, that really gives him a chance, especially against right-handers."

In 2007 and '08, Okajima was effective against hitters from both sides of the plate. The last two seasons, though, he's profiled more like a left-handed specialist, at least in results, if not in stuff.

Three of the five Okajima faced Saturday were left-handed hitters.

The only two hits Okajima has allowed this season -- from his first appearance -- were to left-handers.

Salty behind plate for back-to-back games

BOSTON -- Jarrod Saltalamacchia was behind the plate for a second straight day on Sunday, the first time that's happened since the Red Sox's first series of the season at Fenway of the season, April 8-9 against the Yankees.

On Sunday, the repetition came in a day game after a night game, no less.

"I don't know that I really need to worry about it down the year," manager Terry Francona said when asked if he would often catch Saltalamacchia in a day game after a night game. "He's a young strong kid, but I haven't really thought about June or July. I just have no qualms about today."

What Sunday brought was a start for knuckleballer Tim Wakefield, and it's possible that's what brought Saltalamacchia back behind the plate. When he was a regular starter, Wakefield often threw to catchers other than Jason Varitek.

"I haven't done it a lot," Saltalamacchia said about day-after-night duties. "Me and Tek have been splitting. I haven't been in there every single day, so I'm not tired. I'm a young guy, I can do it."

The hot hand could play a part, too. Saltalamacchia's coming off a 2-for-4 performance Saturday, and he has hits in five of his last six games.