Shields remains focused on continuing his playing career and recently completed throwing sessions in front of representatives from the Tigers, Indians and Rangers, Jon Paul Morosi of MLB Network reports.

The White Sox declined Shields' $16 million option for 2019, making him a free agent.

Shields allowed four runs on six hits and four walks while striking out six over six innings in a no-decision Tuesday against the Indians.

Shields pitched six innings Thursday, allowing two runs on five hits and three walks in the win over Cleveland. He struck out one and gave up two home runs in the no-decision.