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7/9/2014 8:07 P.M. ET

Santana likely to do rehab assignment over break

SEATTLE -- Rookie shortstop Danny Santana won't rejoin the Twins this weekend in Colorado, as the Twins want him to go on a rehab assignment before returning from the 15-day disabled list.

Santana, who has been on the DL since June 27 with a bone bruise in his left knee, has been rehabbing at Target Field but isn't ready to return this weekend. He's eligible to return from the DL on Saturday. The hope is that he'll be cleared to go on a rehab assignment over the All-Star break early next week before rejoining the Twins during their homestand that begins on July 18.

"I think if he's ready and available, we'll send him on a rehab assignment over the All-Star break," Twins manager Ron Gardenhire said. "We want to get him some swings and some at-bats and make sure his leg is OK. That's kind of what we're hoping for."

Santana, 23, has been a sparkplug for the Twins this season, hitting .328/.366/.448 with two homers, 10 doubles and six stolen bases in 37 games this season.

Johnson will be recalled to start weekend opener

SEATTLE -- Left-hander Kris Johnson will be recalled from Triple-A Rochester to start Friday night against the Rockies, Twins manager Ron Gardenhire said Wednesday.

The Twins need a starter with right-hander Ricky Nolasco on the 15-day disabled list with a right elbow strain. A corresponding move will come before Friday's game.

Johnson, 29, has been pitching well at Rochester this season, posting an 8-4 records and 2.75 ERA with 83 strikeouts and 38 walks in 98 1/3 innings over 16 starts. His last start came Sunday, when he gave up one run on two hits over seven innings, so he'll be on normal rest Friday.

The lefty also made one spot start with the Twins on May 1 in the second game of a doubleheader against the Dodgers. He tossed 4 1/3 scoreless innings, but couldn't go through the fifth, as he threw 106 pitches.

"He's been throwing great like a lot of guys down there," Gardenhire said. 'I know last time he was up here his pitch count got high, but he has good stuff. He's been pitching well. That's who they recommended and he's in line, so I'm happy with it."

The Twins are likely to option right-hander Yohan Pino to Rochester after he starts Thursday against the Mariners to make room for Johnson. Pino wouldn't have to miss a start with the Twins because of the four-day All-Star break that begins Monday.

Rhett Bollinger is a reporter for MLB.com. Read his blog, Bollinger Beat, and follow him on Twitter @RhettBollinger. This story was not subject to the approval of Major League Baseball or its clubs.