Wenceel Pérez is on a rehab assignment and is likely to rejoin the Detroit roster soon.

Smith will fill in for Corey Seager, who is likely out for the season. Plus a closer change in NY, Steele to the IL, and more.

Blake Snell will face Arizona Thursday

NL West: Opportunities for SF and COL prospects; injured veterans returning in ARI; Knack an option for LA; and rotation notes for SDP.

Christian Walker returns for ARI as they try to chase down the Dodgers; Edwards speeds back into MIA; youth movement in September for SF.

Bowden Francis has been excellent of late and looks to continue that success versus the Phillies.

Two Padres regulars return earlier than expected; an Astros SP heading to the bullpen.

Brady Singer clocked a 12% SwK in August

Trevor Story began a rehab assignment in Triple-A and could soon return to the BOS lineup. Plus, reinforcements are coming for the NYY rotation, and more.

Moves are plentiful across both leagues as teams take advantage of September roster expansion.

Osvaldo Bido is in great form as he takes on the Mariners at home.