LEADING OFF

A look at what’s happening all around the majors today:

MILLER WATCH: The Indians evaluate Andrew Miller after the star reliever aggravated the patellar tendinitis in his right knee Monday, knocking him out of a game just days after he returned from the disabled list for the same injury. Manager Terry Francona said it was likely that Miller will return to the DL, although the team was waiting to evaluate him a day after the flare up before making that call.

SERIES PREVIEW? The Nationals and Astros begin a three-game series between World Series contenders, although an October showdown would likely look much different. Washington stars Bryce Harper and Max Scherzer are on the disabled list, as is Houston shortstop Carlos Correa. Tanner Roark (9-8, 4.70) pitches the opener for the Nats against right-hander Charlie Morton (10-5, 3.69).

ELBOW BLUES: Steven Matz is expected to have another elbow operation in the next few days, ending a miserable season for the Mets lefthander. Matz was diagnosed Monday with irritation of the ulnar nerve in his left elbow, the team said. Surgery was recommended to reposition the nerve and relieve the irritation, a similar procedure to the one teammate Jacob deGrom had last year.

GIOLITO’S TURN: Hyped prospect Lucas Giolito will make his first big league start with the White Sox in a game against Minnesota. The righthander came to Chicago in a trade for outfielder Adam Eaton last December and has been on a tear at Triple-A Charlotte, going 2-0 with a 1.53 ERA in three August starts.