Foltynewicz elected free agency after clearing outright waivers Saturday.
Foltynewicz worked out of the bullpen Sunday in his first game back from the COVID-19 injured list, tossing three innings while yielding two runs on two hits and two walks in the Rangers' 7-2 loss to the White Sox.
Foltynewicz (undisclosed) was activated from the COVID-19 injured list Sunday.
Foltynewics (undisclosed) has returned to the Rangers but is still on the COVID-19 injured list as of Friday, Kennedi Landry of MLB.com reports.
Foltynewicz (COVID-19 injured list) was cleared Monday to resume working out at the Rangers' spring training facility in Arizona, Levi Weaver of The Athletic reports.
The Rangers placed Foltynewicz on the COVID-19 injured list Monday, Chris Halicke of SI.com reports.
Foltynewicz (2-12) allowed two runs on three hits and two walks while striking out five over six innings, taking the loss to the Mariners on Wednesday.
Foltynewicz (2-11) allowed three earned runs on six hits while striking out six across seven innings, taking the loss to the Mariners on Thursday.
Foltynewicz allowed two runs on three hits and three walks while striking out one over five innings for a no-decision in Sunday's 4-3 extra-inning win over Seattle.
Foltynewicz is the expected starter for Thursday's game at Detroit, Joseph Hoyt of the Dallas Morning News reports.