Friday's game between the Boston Red Sox and Kansas City Royals at Fenway Park was postponed.
No makeup date has been announced.
The city of Boston is in lockdown as authorities search for the missing Boston Marathon bombing suspect.
Red Sox slugger David Ortiz was expected to make his season debut after starting the season on the disabled list because of an Achilles injury that limited him to 90 games last year.
Clay Buchholz (3-0, 0.41 ERA) was scheduled to match up with the Royals' James Shields (1-2, 3.43).
Boston (11-4) is riding a six-game winning streak while Kansas City (8-6) is coming off a two-game split against the Atlanta Braves.
---Texas Rangers' No. 1 starter Matt Harrison lasted just two games into his five-year, $55 million contract before a back injury required a stint on the disabled list.
The Rangers announced the left-hander is likely to miss several months after opting for surgery to alleviate soreness in his lower back. Harrison, who won 18 games in 2012, has a herniated disk in his back. Harrison was 0-2 with an 8.44 ERA in 2013.
---Friday's series opener between the Chicago White Sox and Minnesota Twins at U.S. Cellular Field has been postponed due to cold weather.
It is the third game this week involving the Twins that has been called off because of weather.
---The Oakland A's reinstated first baseman Brandon Moss from the paternity list and optioned Shane Peterson back to Class AAA Sacramento on Friday.
Moss went on the paternity list Tuesday for the birth of his second son. He is batting .283 with 13 RBI in 13 games.
---Washington Nationals outfielder Bryce Harper was not happy that the jersey he wore on Opening Day was recently auctioned off by the team.
He slammed two home runs on April 1 in the victory over the Miami Marlins. The game-worn jersey was sold for more than $13,000.
"They just take my jersey away from me and don't ask if I want it or anything!" Harper wrote on Twitter on Thursday. "First opening day! Jersey gone!"
--- Julio Borbon, who was put on waivers by the Texas Rangers, was claimed off waivers by the Chicago Cubs.
---Pitcher John Maine was designated for assignment by the Miami Marlins. He has yielded 10 runs in 7 1/3 innings this seasons.
---New York Mets prospect Travis d'Arnaud will miss about eight weeks with a non-displaced fracture in his left foot. He is currently playing at the Triple-A level.