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8/20/2013 12:55 A.M. ET

Twitter, Facebook not for Sandberg

PHILADELPHIA -- Don't expect to see Phillies interim manager Ryne Sandberg on social media anytime soon.

Like, ever.

"I've had a lot of pressure from my five kids, who range from 28 to 34 years old, all over me about having Facebook and Twitter accounts and all that and how good that would be," Sandberg said before Tuesday's game. "I haven't gone that route yet. I text. A lot of texts. But the Twitter thing and all that, me personally, I don't see how anything good comes out of that. I don't see why I need to share every thought or some thought I have on a subject and throw it out there. I think, for me, I see only bad things happening from that. And Facebook, talk about not having any privacy."

Lannan out for season with left knee injury

Phillies left-hander John Lannan's season is finished, as he requires surgery on his left knee.

Lannan said on Tuesday he has a 60 percent tear of a tendon in the knee. Phillies physician Michael Ciccotti has recommend surgery, although Lannan will receive a second opinion from Dodgers physician Neal ElAttrache in Los Angeles.

"I'm pretty sure I'm going to get surgery," Lannan said. "They've got to reattach the tendon to a healthy point in the knee."

Lannan missed two months earlier this season with a strained quadriceps tendon in the knee. He said last week in Atlanta he wanted to get this recurring issue -- the knee has bothered him in previous seasons -- resolved. The recovery from this surgery could take 4-6 months, although he said he will not rush it.

"Long term, I know if I do the right things and rehab the right way and I don't rush back, I'll be all right," Lannan said.

Lannan is eligible for salary arbitration following the season. He made $2.5 million this year, so it certainly seems possible the Phillies non-tender him because of the health risk.

"Whenever that time comes that's when I've got to reassess the situation," he said. "But for now I'm a Phillie."

Proefrock also gave injury updates on other Phillies:

Ryan Howard (left knee surgery): He saw a doctor on Monday and will begin baseball activities Thursday.

Ben Revere (right ankle surgery): He is finally off crutches. "I don't know whether Ryan or Ben will be back on the field here or in Florida [for rehab appearances], but the expectation is that they'll be back on the field somewhere before the end of the season," Proefrock said. "Whether it's up here, whether they're playing in instructional league, I don't know. … I think the main thing for both of them is to just get them to the point where there are no surprises in Spring Training next year."

Mike Adams (right shoulder surgery): He continues to rehab and, as Adams said recently, he expects to be ready come Spring Training.

Michael Stutes (right biceps tendinitis): He is long-tossing. "He's making good progress," Proefrock said. Proefrock said there is a chance Stutes could be back at some point this year, although it's too early in the process to offer a timetable.

Jeremy Horst (sprained left elbow). He visited the doctor Tuesday. He could begin a throwing program soon.

• Joe Savery (stiff left elbow). He will begin a rehab assignment later this week, most likely in Clearwater, Fla.

• Jonathan Pettibone (strained right shoulder): He allowed 10 hits, three runs and struck out one in six innings on Tuesday in a rehab start with Triple-A Lehigh Valley.

Sandberg seeks clarification on balk call

PHILADELPHIA -- Phillies left-hander Jake Diekman got called for an unusual balk in the eighth inning of Monday's 5-4 win over the Rockies at Citizens Bank Park.

Diekman was working out of the stretch with runners on first and second when Nolan Arenado wanted to call time, and made a movement out of the batter's box, although he never completely left the box and time had never been called. Diekman began his delivery to the plate, but upon seeing Arenado move out of the box he believed time had been called and stopped his delivery. Home-plate umpire Jim Joyce called a balk.

Phillies interim manager Ryne Sandberg and Joyce had three conversations about the call during the game. Sandberg's contention was that a hitter cannot induce a balk. Rule 6.02(b) states: "If after the pitcher starts his windup or comes to a "set position" with a runner on, he does not go through with his pitch because the batter has stepped out of the box, it shall not be called a balk."

Joyce spoke about the call following the game with Randy Marsh, who is Major League Baseball's director of umpires. Marsh is in town this week.

"I implemented the balk wrong," Joyce said before Tuesday's game. "The rule actually states if the batter leaves the batter's box and causes the pitcher to hesitate or stop, a balk shall not be called. I got probably a little more technical on that. He didn't leave the box, but the spirit of the rule is if you make the pitcher stop by some sort of action by the batter, a balk shall not be called. I probably was a little overzealous in throwing out that balk."

Joyce said he spoke with Sandberg and Rockies manager Walt Weiss about it before Tuesday's game.

"You could have the hitter step out, and if the pitcher delivers a weaker pitch they could step back in and whack it, if they're just trying to deliver a pitch," Sandberg said. "So, for me, it's a total disadvantage for the pitcher there in all regards to the play. The rule states that, and I think that's why the rule is what it is."

In Tuesday's 5-3 loss to the Rockies, two more balks were called, but both were against Colorado reliever Rex Brothers, who didn't come to a complete stop in his delivery from the stretch in the same at-bat in the eighth inning.

Todd Zolecki is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.