Kelly went 1-for-3 with a solo home run and a walk in Monday's 7-0 win over Arizona.
Miller was sent outright to Triple-A Iowa on Monday.
Steele (elbow) is hoping to start a rehab assignment after throwing two more live bullpen sessions, Taylor McGregor of Marquee Sports Network reports.
Cardinals manager Oliver Marmol said Sunday that Mathews will remain in the team's rotation for the foreseeable future, Derrick Goold of the St. Louis Post-Dispatch reports.
Winn was slated to undergo a CT scan and an MRI on his injured left thumb Sunday night, Derrick Goold of the St. Louis Post-Dispatch reports.
Suzuki went 2-for-3 with three runs scored, three walks and a stolen base in Sunday's 19-2 win over the Mariners.
Imanaga did not factor into the decision Sunday, allowing two runs (one earned) on five hits, two walks and a hit-by-pitch over two-plus innings against the Mariners. He struck out four.
Gausman (hand) is listed as the Cubs' probable starting pitcher for Monday's game against the Diamondbacks at Chase Field.
Ramirez went 3-for-6 with a home run, two additional runs scored and five total RBI in Sunday's 19-2 win over the Mariners.
Happ went 2-for-4 with a walk, a home run, an additional run scored and five total RBI in Sunday's 19-2 win over the Mariners.
