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Scientists have used ultra-high-resolution cryo–electron microscopy to capture the most detailed portrait ever of an opioid drug triggering the biochemical signaling cascade that gives it its power.

Marlins pitcher Dan Straily has been suspended for five games for intentionally throwing at the Giants' Buster Posey. Marlins manager Don Mattingly also was suspended one game.

The Tigers and Royals will play a game in Omaha ahead of the 2019 College World Series, an initiative that MLB commissioner Rob Manfred says is good for the sport.

St. Louis Cardinals right-hander Michael Wacha was put on the disabled list Thursday with an oblique strain.

The Twins' Eduardo Escobar was hit in the elbow by a pitch from Boston's Rick Porcello in the first inning and later left the game.

UCSF researchers quantified the effects of Prop 47, which reclassified drug possession offenses from felonies or “wobblers”.

Sick of seeing pitchers hit? Love NL strategy? Either way, the argument is good for baseball. Plus, a Jeff Luhnow Q&A and Verlander's next milestone.

A so-called “jumping gene” that researchers long considered either genetic junk or a pernicious parasite is actually a critical regulator of the first stages of embryonic development.

From Nolan Ryan to King Felix to, well, more Nolan Ryan, we look at the best gem ever thrown by each franchise and try to predict who could top it.

In a matter of hours this winter, Milwaukee went all-in on a new one-two punch -- and it hasn't taken long for the splurge to pay off.

Giancarlo Stanton, who has been struggling at the plate in home games, blasted a walk-off home run to give the Yankees a major league-leading 23rd win when trailing at any point in a game this season.

He's leading the league in hitting and his team is having a great season, yet somehow it seems no one is talking about Jose Altuve.

With their athleticism and daring on the bases and in the field, the Cubs have a leg up on other contenders in the National League -- as the Dodgers found out.

Many considered Billy Connors the Yankees' "pitching whisperer" for his help with greats like Andy Pettitte and Mariano Rivera.

It started as a joke among Seattle's coaching staff, and even led to the Twitter hashtag #IchiForDC, but Ichiro Suzuki said Wednesday that he's not interested in entering next month's All-Star Home Run Derby.

A hot dog launched into the stands at Citizens Bank Park by the Phillie Phanatic injured a fan who was struck in the face. The hot dog was wrapped in duct tape so it wouldn't disintegrate upon launch.

Each year, 300,000 infants worldwide are born with sickle cell. UCSF Benioff Children’s Hospitals are at the the leading edge of advancements to cure sickle cell disease.

Corey Kluber became the first pitcher with 11 wins this season, and Jose Ramirez and Jason Kipnis hit three-run homers as the Indians routed the Chicago White Sox 12-0 on Wednesday.

St. Louis Cardinals right-hander Michael Wacha left his start against the Phillies in the fourth inning with what the team said was a left oblique strain.

The Tigers and Royals will play at TD Ameritrade Park in Omaha, Nebraska, on the week before the start of the 2019 CWS, a source confirmed to ESPN.