Manny Machado's five-game suspension for a bat-throwing incident earlier this month was upheld Monday, and the Baltimore Orioles third baseman started serving the punishment immediately.

Machado last week appealed the suspension of the June 8 incident that happened against Oakland. The hearing took place in Baltimore, and the Orioles were hoping some of it would be taken off. But that didn't happen, something that left Machado frustrated before Monday's game.

"It was very disappointing for me," Machado said. "I'm not going to sit here and smile about it and be excited to be [out] five games. Just go about it, put it behind us and ... serve the five games."

The Orioles can't replace Machado on the roster during the five games, four of which come at home against Texas. He is eligible to return next Saturday, the second game of Baltimore's series in Boston.

---The Washington Nationals activated Bryce Harper from the 15-day disabled list.

Harper has been out 59 games with a torn ligament in his left thumb.

To make room for Harper on the 25-man roster, the club optioned left-handed reliever Xavier Cedeno to Triple-A Syracuse.

---Former New York Mets general manager Frank Cashen died on Monday. He was 91.

Cashen served as the Mets' GM from 1980-91 and put together the team that won the 1986 World Series.

After being a perennial loser, the Mets had the best record in Major League Baseball during Cashen's last eight seasons as GM. They went 743-550 from 1984-91.

---A ticket stub signed by New York Yankees legend Lou Gehrig on July 4, 1939 -- the day he retired from baseball -- is estimated to fetch more than $100,000 in an auction, the Associated Press reported.

Heritage Auctions said more than 60,000 tickets to the game at Yankee Stadium were sold but only two are known to have survived. Of those, only one was signed by Gehrig.

The ticket is scheduled to be auctioned off Aug. 1 in Cleveland.

---Free agent minor league right-handed pitcher Joel Pineiro, who was recently released from the Los Angeles Angels' Triple-A team, received a 50-game suspension for a banned substance, the Office of the Commissioner of Baseball announced.

The league said Pineiro, 35, tested positive for Heptaminol, a prohibited stimulant in violation of the Minor League Drug Prevention and Treatment Program.

---The Minnesota Twins activated third baseman Trevor Plouffe and utilityman Eduardo Nunez from the 15-day disabled list.

Plouffe (rib injury) and Nunez (right hamstring strain) both missed the Twins' last 14 games after suffering their injuries during the game on June 14 at Detroit.

---The Kansas City Royals signed veteran outfielder/designated hitter Raul Ibanez to a major league contract.

Ibanez, 42, signed with the Los Angeles Angels prior to this season, but was granted his outright release on June 21 and cleared waivers three days later. He played in 57 games for the Angels, batting .157 with five doubles, two triples, three homers and 21 RBIs.

Kansas City also recalled infielder Christian Colon from Triple-A Omaha. In corresponding moves with the major league roster, the Royals designated infielder Pedro Ciriaco and outfielder Justin Maxwell for assignment.

---The St. Louis Cardinals recalled outfielder Oscar Taveras from Triple-A Memphis.

The 22-year-old Taveras, the Cardinals' top prospect, will report in San Francisco for the game Tuesday night against the Giants.

---The Orioles selected the contract of right-hander Ramon Ramirez from Triple-A Norfolk and optioned right-hander Evan Meek back to that team.

---Detroit Tigers designated hitter Victor Martinez was a late lineup scratch due to soreness in his lower back/side area. He was replaced by J.D. Martinez, originally scheduled to get the game off.

---New York Yankees left-hander CC Sabathia (inflamed right knee) threw a bullpen session at Yankee Stadium. General manager Brian Cashman said that he will make a rehab start Thursday at Double-A Trenton.