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8/19/2014 12:12 A.M. ET

Blanco goes deep as Rollins gets break

PHILADELPHIA -- Phillies manager Ryne Sandberg felt he needed to give Jimmy Rollins "a little break" on Monday, so the shortstop did not play in a 4-1 victory over the Mariners at Citizens Bank Park.

Rollins, 35, has started 115 games this season. Only Marlon Byrd (119) and Chase Utley (116) have more starts for the Phils. Entering Monday, Rollins had started 16 straight games and 34 of the last 35. Rollins went 3-for-18 (.167) during last week's road trip and was hitless in his final nine at-bats.

"He's got a pretty good streak of games," Sandberg said. "Give him a little day to regroup and get his feet underneath him."

Andres Blanco started at shortstop and made an impact with a three-run home run in the fifth inning that gave the Phillies a 4-0 lead. It was Blanco's first homer since July 1, 2011.

Catcher Carlos Ruiz filled in for Rollins in the No. 2 hole in the order and drew three walks.

Mayberry set to begin rehab assignment at Triple-A

PHILADELPHIA -- Outfielder John Mayberry Jr., on the 15-day disabled list with inflammation in his left wrist, will begin a Minor League rehab assignment with Triple-A Lehigh Valley on Tuesday.

Phillies manager Ryne Sandberg said Mayberry Jr. will rehab with the IronPigs for roughly six to eight games. The Phillies already have a crowded outfield of Marlon Byrd, Ben Revere, Domonic Brown, Grady Sizemore and Darin Ruf, so there is no need to rush. Rosters expand Sept. 1.

"With a wrist injury like that, you want to be careful with it and take it a game at a time," Sandberg said before Monday's game against the Mariners. "Possibly starting off a little bit slowly and progressing with it. Whatever is necessary, but a little more on the cautious side if anything as far as the number of games."

Mayberry Jr. has been out since July 21. He will play all three outfield positions and some first base during the rehab assignment, Sandberg said.

Austin Laymance is a reporter for MLB.com. Follow him on Twitter at @jalaymance. This story was not subject to the approval of Major League Baseball or its clubs.