Free-agent right-handed pitcher Doug Fister and the Texas Rangers have agreed to a $4 million, one-year contract, a source told ESPN, confirming multiple reports.

Claimed off waivers in late May because the Boston Red Sox were in need of pitching depth, Fister helped secure his Rangers deal for 2018 by putting together a solid seven-start stretch in the middle of last season.

The veteran sinkerballer will remain effective as long as he continues to get ground balls.