December 5 2015
- Giants sign Jeff Samardzija to a 5-year $81 million contract. He will receive $9 million during the first year of his contract and $18 million in each of the next four years.
December 6 2015
- Athletics sign relief pitcher Ryan Madson to a 3-year $22 million contract.
- Dodgers sign 2B Chase Utley to a 1-year $7 million contract.
- Tigers sign Jarrod Saltalamacchia to a 1-year MLB minimum contract.
- Royals sign relief pitcher Joakim Soria to a 3-year $25 million contract.
- Royals re-sign starter Chris Young to a 2-year $11.5 million contract.
December 7 2015
- Dodgers sign RHP Hisashi Iwakuma to a 3-year $45 million contract.
- Cubs re-sign RHP Trevor Cahill to a 1-year $4.25 million contract.
Tigers sign relief pitcher Mark Lowe to a 2-year $13 million contract.
- Mariners acquire LHP Wade Miley and RHP Jonathan Aro for LHP Roenis Elias and and right handed reliever Carson Smith