Schlereth inked a minor-league deal with the Red Sox on Monday, Chris Cotillo of MassLive.com reports.
Schlereth was promoted to Triple-A Tacoma on Saturday, Josh Kirshenbaum of the Tacoma News Tribune reports.
The Mariners signed Schlereth to a minor-league contract Saturday, Ryan Divish of The Seattle Times reports.
Schlereth signed with the Long Island Ducks of the independent Atlantic League on Thursday, The Press of Atlantic City reports.
Schlereth signed a minor league deal with the Blue Jays on Monday, Ben Nicholson-Smith of Sportsnet reports.
Tigers acquired LHP Daniel Schlereth from the Pirates for cash considerations; assigned him to Triple-A Toledo.
Schlereth had a 3.98 ERA over 73 appearances with the Tigers from 2010-2012. The 28-year-old will function as organizational depth in his return. He had an ugly 7.23 ERA and 18/18 K/BB ratio over 18 2/3 innings this season with the Pirates' Triple-A affiliate.
Pirates signed LHP Daniel Schlereth to a minor league contract with an invitation to spring training.
Not so long ago, the son of ESPN NFL analyst Mark Schlereth was a prized prospect in both Arizona and Detroit. Tendinitis in his throwing shoulder began wreaking havoc on his career in 2012 and the Tigers pulled the plug on Schlereth last winter. The 27-year-old was only healthy enough to complete 11 innings for Triple-A Norfolk (Orioles) in 2013, though he only allowed one earned run in those 12 relief appearances.