• The Red Sox have released reliever Shunsuke Watanabe, who was in camp on a minor league invite, tweets WEEI.com's Alex Speier. The 37-year-old has never pitched in the majors, spending his entire career in Japan with the Chiba Lotte Marines.
• First baseman Rich Poythress has been released by the Mariners, Ryan Divish of the Seattle Times reports (via Twitter). A lifetime member of the Mariners organization, the 26-year-old has never received a big league callup.
• The Nationals signed lefty Aaron Laffey to a minor league deal, tweets Chris Cotillo of MLBDailyDish. Laffey was released by the Orioles earlier this week.
• The A's have acquired left-hander Eric Berger from the Astros in exchange for a player to be named, according to Evan Drellich of the Houston Chronicle (via Twitter). Berger, 27, has never made an appearance in the major leagues.

Watanabe, 37, is a sidearmer who boasts one of the lowest deliveries in professional baseball.  While his pitches top out around 70 MPH, his tricky delivery has frustrated hitters across 13 seasons with the NPB's Chiba Lotte Marines.  For his career in Japan, Watanabe has posted a 3.65 ERA with 4.8 K/9 and 2.2 BB/9.

Carpenter, who came over in the Theo Epstein compensation deal with the Cubs along with fellow right-hander Aaron Kurcz, saw eight big league games with Boston in 2012 and spent the bulk of 2013 with the club's Triple-A affiliate.   

• The Orioles have a two-year offer out to Grant Balfour, tweets Roch Kubatko of MASNsports.com.  Earlier today, Jon Heyman of CBSSports.com reported that the O's have an offer out to the reliever.
• A report from Japanese outlet Sponichi (Japanese link) indicates that submariner Shunsuke Watanabe is expected to sign a minor league deal with the Red Sox.  Special thanks to Patrick Newman of NPB Tracker for posting the report along via Twitter.
• The Blue Jays announced that right-hander Thad Weber has been granted his release and has signed a contract with the NC Dinos of the Korean Baseball Organization.  The club now has 39 players on the 40-man roster.

• Independent league right-hander Hideyoshi Ohtake has a tryout with the Red Sox, according to a report from Yahoo Japan passed along by Patrick Newman of NPBTracker (via Twitter).  Ohtake's fastball reaches 94 mph on the radar gun.
• Ben Nicholson-Smith of Sportsnet.ca reports that 15-20 teams scouted Cuban catcher Yenier Bello's showcase earlier this week. Bello took batting practice and gave teams a glimpse of his work behind the plate, including making throws to second base and third base.
• Also at that showcase, writes Nicholson-Smith, were right-hander Rogelio Armenteros and first baseman Jozzen Cuesta. Armenteros threw for scouts and topped 90 mph with his heater. The pair of Cuban prospects is represented by the Wasserman Media Group.
• Side-armer Shunsuke Watanabe is going to try to make the jump to Major League Baseball at age 37, according to an Asahi report passed on by NPB Tracker's Patrick Newman. Watanbe's delivery is one of the lowest to the ground in pro baseball, Newman notes (his second tweet includes a video), but his pitches top out around 70 mph (Twitter links). Watanabe has spent 13 season with NPB's Chiba Lotte Marines, totaling a 3.65 ERA with 4.8 K/9 and 2.2 BB/9. Despite his unorthodox delivery, he's spent nearly his entire career as a starting pitcher.