Oakland will try out another new arm in their reeling bullpen, after adding right-hander Edward Mujica in a trade with the Red Sox on Saturday.

Bryce Harper stepped into the batter’s box with the game on the line Saturday afternoon. Funny thing about a moment like this: It separates players — the great ones from most of the rest.

Adam Rosales placed a hard tag on Asdrubal Cabrera on a pick-off attempt in the fourth inning, and the Rays’ shortstop took exception to the play as each team rushed the field. The situation was settled without incident, aside from a Rangers challenge that was upheld.

Brian McCann, Stephen Drew and Jacoby Ellsbury are among the potential difference-making players for DraftKings participants on Sunday.

After the Nationals won Saturday’s game, 8-6, on a walk-off homer by Bryce Harper, manager Matt Williams was asked if he had ever seen a player go on a home run tear like Harper. Williams was quick to answer and mentioned former teammate Barry Bonds, who was ahead of Williams in the Giants’ lineup in the early- to mid-1990s.

Red Sox outfielder Allen Craig has been optioned to Triple-A Pawtucket, a baseball source told MLB.com’s Ian Browne on Saturday night. According to the source, the 30-year-old Craig was heading for the PawSox following an 0-for-4 performance against the Blue Jays in Saturday’s 7-1 loss. The Red Sox have not confirmed the move.

Hours after he took a 115-mph line drive to his face last week, D-backs pitcher Archie Bradley was making jokes at his own expense. Sulking about his unfortunate, nearly tragic situation wasn’t going to help him heal faster.

Jose Altuve, Chris Carter and Colby Rasmus homered to back the pitching of left-hander Dallas Keuchel and lead the Astros to a 6-5 win over the Angels on Saturday night at Angel Stadium.

Alcides Escobar homered on the first pitch of the game and right-hander Jeremy Guthrie fired seven-plus quality innings as the Royals rolled to a 6-2 win on Saturday at Comerica Park. Tigers starter Anibal Sanchez allowed five earned runs in six innings.

Dodgers outfielder Yasiel Puig will have an MRI on his reinjured left hamstring Sunday, but manager Don Mattingly downplayed his concern over the severity of the setback.

Alex Rodriguez was out of the Yankees’ lineup in their 6-2 loss to the Orioles on Saturday with what manager Joe Girardi described as tightness in his legs. Girardi said he’s hopeful that A-Rod will return to the lineup for Sunday’s series finale at Yankee Stadium.

Baltimore hit three home runs and got a quality outing from starter Wei-Yin Chen to snap a four-game losing skid with a 6-2 win Saturday afternoon over the Yankees.

Nationals right-hander Stephen Strasburg had a bullpen session Saturday and said he felt normal and would be ready to pitch next week, possibly in Arizona, where the Nats will face the D-backs from Monday through Wednesday.

Royals shortstop Alcides Escobar certainly kept Statcast™ busy in Saturday’s 6-2 win over the Tigers, particularly in the third inning, when he put his full defensive arsenal on display.

Paul Goldschmidt is the perfect baseball player. Or at least he’s about as close to perfect as anyone will get. Joey Votto is like that, too. But there being only so many spots for National League first basemen in the All-Star Game, you may already see where we’re going with this.

Tigers ace David Price spent Saturday morning undergoing an MRI exam, which revealed a mild strain on the right hamstring he injured on Friday night, but he sounded optimistic about making his next start on Thursday vs. Minnesota.

The Astros were not expected to be leading the American League West in May. Though the team made a dramatic 19-game improvement in 2014 following three consecutive 100-loss seasons, Baseball Prospectus’ PECOTA pegged the team to win 77 games entering this season. But a 77-win team is just one hot streak away from the 88-win total of last year’s Wild Card teams, and the Astros got theirs early.