Heineman underwent shoulder surgery in mid-December, Levi Weaver of The Athletic reports.
Heineman missed some time last season with Triple-A Round Rock due to shoulder soreness. He's expected to be able to participate in rehab games in late April, so his full return likely won't come until mid-May. The outfielder wasn't expected to push for a major-league roster spot at the start of the season, but the injury will delay any potential debut until later in the year.
Heineman spent the 2018 season at Triple-A Round Rock -- the Rangers' former affiliate -- and had a .295/.355/.429 slash line with 11 home runs and 16 stolen bases. The 25-year-old should have an opportunity to showcase himself at spring training but could end up at the new Triple-A affiliate in Nashville to start the season.
Heineman left Sunday's minor-league action due to shoulder soreness, Levi Weaver of The Athletic Dallas reports.
The severity of Heineman's injury is unknown, although given the nature of the issue, he shouldn't be out for long. He's hitting .296 with nine homers and 49 RBI through 84 games at Triple-A Round Rock this season.
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