Lambert will be sidelined for 10-to-14 days after being diagnosed with right shoulder soreness Thursday, Scott Merkin of MLB.com reports.
Lambert made one scoreless Cactus League appearance on Feb. 25 but hasn't pitched since. Now he'll be shelved for a while and seems likely to begin the season on the injured list. Lambert has collected a 4.33 ERA and 98:50 K:BB over 99.2 innings over parts of four seasons with the White Sox.