Wisniewski was promoted to the Chiefs' active roster from the practice squad Saturday, Pete Sweeney of ArrowheadPride.com reports.
The Chiefs elevated Wisniewski (pectoral) to the active roster Saturday.
The Steelers waived Wisniewski (pectoral) on Saturday, Teresa Varley of the team's official site reports.
Wisniewski (pectoral) is listed as doubtful for Sunday's game in Dallas, Adam Caplan of SiriusXM NFL Radio reports.
Wisniewski (chest) was activated to the active roster Wednesday.
Wisniewski (chest) returned to practice with the team Wednesday, Ray Fittipaldo of the Pittsburgh Post-Gazette reports.
Wisniewski (chest) was placed on IR on Friday.
Wisniewski (pectoral) was ruled out from returning to Monday's contest against the Giants, Brooke Pryor of ESPN.com reports.
Wisniewski signed a two-year contract with the Steelers on Thursday, Tom Pelissero of NFL Network reports.
Wisniewski signed a contract with the Chiefs on Tuesday, Adam Schefter of ESPN reports.