Carson received a 50-game suspension for a second positive test for a drug of abuse, ESPN's Adam Rubin reports.

A 26-year-old lefty, Carson last pitched in the majors in 2013, when he posted an 8.24 ERA and 5:4 K:BB in 14 appearances (19.2 innings) for the Mets. He hasn't started a game in the minors since 2011, and he struggled while pitching out of the bullpen at the Triple-A level last season.

Dodgers signed LHP Robert Carson to a minor league contract.

The 25-year-old southpaw had been pitching for the Angels Triple-A affiliate in Salt Lake where he posted a troublesome 10.34 ERA, 2.30 WHIP and 9/13 K/BB ratio over 15 2/3 innings. He's nothing more than organizational fodder at this point.

Angels sent LHP Robert Carson outright to Triple-A Salt Lake.

The 25-year-old southpaw was claimed off waivers from the Mets early in the offseason. He'll serve as organizational bullpen depth and is likely to see time with the big league club at some point during the 2014 season.

Angels claimed LHP Robert Carson off waivers from the Mets.

Carson had an ugly 8.24 ERA and 8/7 K/BB ratio over 19 2/3 innings of work with the Mets this season. He'll function as bullpen depth with the Angels.

Mets recalled LHP Robert Carson from Triple-A Las Vegas.

Carson has put up an 8.24 ERA and 1.42 WHIP over 14 big league appearances this season. He won't be used in high-leverage situations.

Mets optioned LHP Robert Carson to Triple-A Las Vegas.

Carson's stint in New York this time lasted four days and a total of 1 2/3 innings. He'll likely be back with the team after rosters expand in September. The Mets will call up newly acquired reliever Vic Black on Sunday.

Mets recalled LHP Robert Carson from Triple-A Las Vegas.

Carson, 24, has an 8.50 ERA in 13 appearances with the Mets this season. He'll pitch in middle relief.

Mets optioned LHP Robert Carson to Triple-A Las Vegas.

Mets recalled LHP Robert Carson from Triple-A Las Vegas.

The move was made prior to Sunday's game. Carson, 24, appeared in 17 games with the Mets last season and had a 1.17 ERA and 7/2 K/BB ratio over 7 2/3 innings at the Triple-A level this year. He'll function as a third left-hander out of the bullpen alongside Josh Edgin and Scott Rice.

The Mets are expected to promote Robert Carson from Triple-A Las Vegas.

The left-handed reliever was beaten out by fellow lefty Scott Rice for a bullpen spot this spring, but he's performed well at Triple-A in the early going. The Mets have plenty of options for which pitcher he will replace, but Adam Rubin of ESPNNewYork.com speculated it's likely southpaw Josh Edgin.

Mets optioned LHP Robert Carson to Triple-A Las Vegas; reassigned C Landon Powell and INF Omar Quintanilla to minor league camp.

Carson lost out on a roster spot to Scott Rice, while Lowell was beat out by Anthony Recker for the backup catcher job. The Mets want Quintanilla playing shortstop every day at Vegas. Both players have a shot at seeing time with the big club at some point this season.

Robert Carson has been diagnosed with a triceps tendon strain and is listed as day-to-day.

Carson left Tuesday's game after experiencing tightness in his left elbow. The diagnosis could have been worse.

Robert Carson left Tuesday's game with a left elbow strain.

X-rays on Carson's elbow were negative, but he'll undergo an MRI Wednesday. The southpaw has put up a 4.72 ERA and 1.28 WHIP in 17 games for the Mets this season.

Mets recalled LHP Robert Carson from Triple-A Buffalo.

He'll take the roster spot of Jeremy Hefner, who will be away for a couple of days on paternity leave. Carson has had two brief stints with the Mets this season, but has spent the majority of the year in the minors, posting a 3.86 ERA and 52/21 K/BB ratio over 51 1/3 innings between Double- and Triple-A. He'll provide a second left-hander out of the bullpen to complement Josh Edgin.

The Mets are considering adding Robert Carson to their bullpen.

With Tim Byrdak (shoulder) on the disabled list, Carson is a candidate to be promoted for this weekend's series with the Braves. "When we get home, we're going to take a look," manager Terry Collins said. "We've got obviously Johan coming off the DL at the end of the week, and we've got to make another move, so we'll certainly make some considerations whether we need another lefty."

The Mets are expected to recall Robert Carson and Josh Satin from Triple-A Buffalo.

They'll take the roster spots of Ramon Ramirez (hamstring) and Mike Baxter (collarbone). It had been thought that Pedro Beato would take Ramirez's spot, but Adam Rubin of ESPN New York speculates that they might not be ready to restore him to the 40-man roster since Chris Young will need a spot Tuesday.

Mets optioned LHP Robert Carson to Double-A Binghamton.

Carson gave up two runs over three innings after being called up a little over a week ago. He'll return to a 1.84 ERA and 13/4 K/BB ratio over 14 2/3 innings at Binghamton.

Mets recalled LHP Robert Carson from Triple-A Syracuse.

Carson is likely to be sent back to the Triple-A level on Friday, when the Mets are forced to promote a starter to take Mike Pelfrey's (elbow) spot in the rotation.

Robert Carson (intercostal strain) threw a bullpen session Tuesday without incident.

Carson suffered an intercostal strain on his right side early in camp, but has made steady progress since receiving an injection. The 23-year-old southpaw hopes to throw one more bullpen session before being cleared to make his Grapefruit League debut.

Robert Carson won't throw for at least a week after straining the intercostal muscles on his left side earlier this week.

Carson has received an injection to hopefully speed the recovery along, but generally intercostal strains sideline players for multiple weeks. It's a tough blow for Carson, who was hoping to impress enough in spring training to earn a spot in the Mets bullpen as a left-handed reliever.