By Bruce Levine-

(CBS) — White Sox ace Chris Sale won’t pitch in a major-league game for at least three weeks, according to the team.

General manager Rick Hahn said on Monday that Sale won’t throw a rehab start for 10 days to two weeks. Sale threw a side session at U.S Cellular Field recently and said it went well when asked about his bullpen session later in the afternoon.

The White Sox pitcher strained a flexor muscle in his left elbow on April 17 while throwing 127 pitches against Boston.

“Sale had a very good sideline today,” Hahn said. “There will be a rehab assignment at some point, and we are going to stop the daily updates on Chris and how he is doing.”

Sale, who has dealt with a few arm issues over the past two seasons, had never been on the disabled list until this season.

Bruce Levine covers the Cubs and White Sox for 670 The Score and Follow him on Twitter @MLBBruceLevine.