The Rangers had designated Fujikawa for assignment Sunday, after the right-hander made only two appearances for them and allowed three runs in 1 2/3 innings. General manager Jon Daniels said Fujikawa had indicated he didn't want to go back to the minor leagues.
The 34-year-old Fujikawa signed with Texas the past winter, after spending the previous two seasons with the Chicago Cubs. His time with the Cubs included a 14-month layoff following Tommy John surgery, and he started this season on the disabled list due to a right groin strain.
Fujikawa had a 4.35 ERA in 11 appearances during his rehab assignment at Double-A Frisco and Triple-A Round Rock.