PHILADELPHIA -- The Phillies will be without two of their regular position players for at least a couple more days.

First baseman Ryan Howard is day to day with bursitis in the heel and Achilles region of his left foot. General manager Ruben Amaro Jr. does not consider it serious and said he could return for the weekend series against the Marlins.

"If it was a playoff situation and it was a must play, he might be in there for that," Amaro said.

Also, Raul Ibanez is considered day to day with a left groin injury. The team does not consider it a DL situation.

Ibanez may have received or will receive an injection, Amaro said, adding an evaluation Monday determined it is unrelated to the sports hernia for which he underwent offseason surgery.

Phillies' Contreras set for surgery, season over

PHILADELPHIA -- Jose Contreras's season is over.

The 39-year-old right-handed reliever will have exploratory surgery on his pitching elbow in the coming days by Dr. Lewis Yocum, general manager Ruben Amaro Jr. said Tuesday. It appears to be a muscular or tendon issue. There is no ligament damage. The hope is Contreras will be ready for Spring Training next season.

"It's a blow for us," Amaro said. "We were hopeful that we'd have him come back and pitch in the back end. So that hurts the depth."

Contreras's bullpen session Monday was cut short because of discomfort. He's been on the disabled list since June 20 with what the team is calling a right forearm strain. Amaro said it's possible Contreras will move to the 60-day DL, opening up a spot on the 40-man roster.

Pence has first earthquake experience

PHILADELPHIA -- Hunter Pence has experienced a hurricane and tornado before. He can now cross earthquake off his bucket list.

"I didn't think Philadelphia would be where that would happen," he said.

A 5.9-magnitude earthquake rocked the Washington D.C. area early Tuesday afternoon, with its effects stretching from North Carolina up to the New England region. Pence tweeted from inside the Phillies' clubhouse after the shaking ended, and CNN.com picked up his tweet for its early report.

Some players were driving to the ballpark when the quake struck. Coaches and staff felt the quake in their lounge, and Pence, catcher Brian Schneider and first baseman Ross Gload were in the clubhouse talking. Pence said Gload stood up and quipped, "Is this it?"

"My equilibrium was a little off," Pence said. "It's kind of like when you're on a cruise ship and it's stormy. It's just like you're getting rocked around a little bit."

Phils call Brown's struggles 'adjustment period'

PHILADELPHIA -- There has been plenty of talk lately about John Mayberry Jr., who has been swinging a hot bat and pushing for more of Raul Ibanez's at-bats.

It has made Domonic Brown a bit of a forgotten man.

Brown had a .728 on-base-plus-slugging percentage when the Phillies demoted him to Triple-A Lehigh Valley last month to make room for Hunter Pence. Brown had better production than Ibanez (.691) and Ben Francisco (.677), but the Phillies see Brown as an outfielder of the future, so they sent him to Lehigh Valley for regular at-bats rather than trying to have him share at-bats with Mayberry, Ibanez and Francisco.

Brown has struggled, hitting .191 (13-for-68) with one homer and three RBIs in 21 games with the IronPigs. It has not helped that he has moved from right field to left field.

"We did a bit of a disservice to him, because he hasn't really gotten quality and steady development time that he's needed," Phillies general manager Ruben Amaro Jr. said Tuesday.

The Phillies called up Brown last year, but he had only 62 at-bats from late July through the end of the season. He missed time in Spring Training when he broke a bone in his right hand. He had 183 at-bats with the Phillies this season before being sent down.

Brown struggled in right field defensively, so it is no surprise to hear he has had his struggles learning a new position. But that is where the Phillies plan to play him, especially with Ibanez a free agent and unlikely to return.

"We believe that's probably going to be his best spot eventually," Amaro said of Brown. "It's an adjustment. Not only getting sent down, which is a blow to the ego. I've been through it. It's not the easiest thing in the world. You've been told you're one of the best prospects in your organization ... it's an adjustment period for him."

Amaro said Brown is unlikely to play winter ball after the season.

"He's had enough reps now that I don't think that's an issue for him," Amaro said. "At some point, maybe it's time for him to get away from things for a while."

Phillies' Baseball 101 clinic for women a success

PHILADELPHIA -- The Phillies hosted their 11th Baseball 101 clinic for women Tuesday at Citizens Bank Park.

More than 140 women sold out the event for the 11th straight time, with proceeds benefiting Phillies charities. The clinic began in 2006, and the Phillies have raised $180,000 since its inception.

Participants from across the Delaware Valley reported at 9:25 a.m. ET and took team photos and toured the clubhouse and press box before hitting the field and batting cages with Phillies coaches. In the afternoon, they met with closer Ryan Madson, held a news conference with manager Charlie Manuel and were lectured on the art of umpiring by Andy Fletcher, who manned the first-base side for Tuesday night's game against the Mets.

The day wrapped up with words from Phillies broadcasters Tom McCarthy, Gary Matthews and Chris Wheeler and a pregame party with the Phanatic and local radio hosts before settling down and watching the real ballplayers battle the Mets.