SAN FRANCISCO -- Buster Posey and Pablo Sandoval went from being leaders to contenders in the fan balloting for next month's All-Star Game.

Posey, who last year received the highest vote total ever for a National Leaguer, slipped behind St. Louis' Yadier Molina, who now leads the balloting for catchers with 3,596,858 votes. Posey's a close second with 3,506,402 votes.

At third base, Sandoval also dropped to second place with 2,788,988 votes, trailing new leader David Wright of the Mets, whose total has reached 2,917,819 votes.

Fans can cast their votes for starters at MLB.com and all 30 club sites -- online or via a mobile device -- using the 2013 All-Star Game MLB.com Ballot until Thursday, July 4, at 8:59 p.m. PT.

Fans may submit 25 online ballots during the voting period, but can also earn a one-time bonus of 10 additional online ballots. To access these additional online ballots, fans must be logged into an MLB.com account when submitting any online ballot. To obtain an MLB.com account, visit www.mlb.com and register in accordance with the enrollment instructions for a free MLB.com account.

Fans can also once again participate in the Home Run Derby Fan Poll. Fans will have the opportunity to select three players in each league whom they would most like to see participate in the Home Run Derby. The 2013 Home Run Derby -- part of Gatorade All-Star Workout Day -- will be broadcast live on ESPN, ESPN HD, ESPN Deportes and ESPN Radio in the United States beginning at 5 p.m. PT on Monday, July 15.

Though originally scheduled for July 7, the 2013 rosters will now be unveiled Saturday, July 6, at 3:30 p.m. PT on the 2013 MLB All-Star Game Selection Show presented by Taco Bell. The show will be televised nationally on FOX.

From Saturday, July 6 to Thursday, July 11, be sure to return to MLB.com and cast your 2013 All-Star Game Final Vote Sponsored by freecreditscore.com for the final player for each League's All-Star roster.

And the voting doesn't end there. The final phase of All-Star Game voting will again have fans participating in the official voting for the Ted Williams All-Star Game Most Valuable Player Award presented by Chevrolet. During the Midsummer Classic, fans will vote exclusively online at MLB.com via the 2013 All-Star Game MLB.com MVP Vote, and their voice will represent 20 percent of the official vote determining the recipient of the Arch Ward Trophy.

The 2013 All-Star Game will be played at Citi Field on Tuesday, July 16. Come to MLB.com for extensive online coverage of the All-Star Week festivities.

The 84th All-Star Game will be televised nationally by FOX Sports, in Canada by Rogers Sportsnet and RDS, and worldwide by partners in more than 200 countries via MLB International's independent feed. ESPN Radio and ESPN Radio Deportes will provide national radio coverage of the All-Star Game. MLB Network and SiriusXM also will also provide comprehensive All-Star Week coverage. For more information, please visit allstargame.com.

Another second-place Giant is Marco Scutaro, who remained in place from last week. Cincinnati's Brandon Phillips (2,597,742) tops the NL at this spot, ahead of Scutaro (2,272,484).

Shortstop Brandon Crawford also occupies second place, but unlike Posey, Sandoval and Scutaro, he's far behind the leader. Crawford, with 1,757,255 votes, is outdistanced by Colorado's Troy Tulowitzki (3,104,285).

Brandon Belt, fourth among first basemen with 1,323,511 votes, possesses about half the total owned by Cincinnati's Joey Votto, the leader with 2,677,813.

San Francisco's outfielders occupy the lower rungs of the leaders' ladder. Hunter Pence (eighth, 1,732,843 votes), Angel Pagan (10th, 1,541,055) and Gregor Blanco (13th, 1,210,892) remained among the top 15.