DALLAS — Commissioner Rob Manfred says Major League Baseball expects to make a decision on possible discipline against Los Angeles Angels star Josh Hamilton by opening day.

Manfred said Friday that “we are working toward a result.”

Hamilton has had a long history of drug and alcohol abuse, and has been suspended in the past. The Angels said Hamilton met with baseball officials last month, but neither side provided details on the reason for the session.

Hamilton is recovering from shoulder surgery and his status for opening day was in jeopardy even before the meeting with MLB.

“I expect a decision before opening day. Obviously with Josh Hamilton recovering from surgery, that may give us some more time because he won’t play,” Manfred said.

Hamilton is going into the third season of a five-year, $125 million contract with the Angels. The 33-year-old outfielder has totaled 31 homers and 123 RBI in two injury-interrupted seasons.

WHITE SOX: Outfielder Adam Eaton agreed to a $23.5 million, five-year contract that includes team options for 2020 and ’21.

Eaton hit .300 with 26 doubles, 10 triples, one homer, 35 RBI, 76 runs and 15 steals last season, his first with the White Sox following a trade from Arizona.

“Adam serves as a catalyst, brings a spark of energy to the ballpark each and every day and helps ignite our offense,” White Sox General Manager Rick Hahn said. “He provided everything we look for in a leadoff hitter, a center fielder and a competitor after joining us last season.”

The deal replaces a $560,000, one-year deal agreed to March 11. The 26-year-old gets $850,000 this year, $2.75 million in 2016, $4 million in 2017, $6 million in 2018 and $8.4 million in 2019.

Chicago has options for $9.5 million in 2020 and $10.5 million in 2021.

CUBS: Pitcher Jon Lester will miss his scheduled start Saturday because of arm fatigue.

Cubs Manager Joe Maddon said “he is just going through a little bit of a dead-arm period.”

Lester, who signed a $155 million, six-year contract during the offseason, is not experiencing pain, according to Maddon.

MARINERS: Outfielder Franklin Gutierrez was among 11 players assigned to minor league spring training camp.

The 32-year-old, a Gold Glove centerfielder in 2010, has a minor league contract. After hitting 30 homers with 134 RBI, 146 runs and 41 steals for Seattle in 2009 and ’10, Gutierrez was limited to 173 games during the past three years because of injuries.

He did not play last season because of a gastrointestinal problem.

METS: Pitcher Zack Wheeler will have Tommy John surgery early next week and is expecting a 14-month rehabilitation, a schedule that would put him back in the major leagues in June 2016.

Wheeler, 24, was 11-11 with a 3.54 ERA and 187 strikeouts last year.