| Wednesday, August 1st , 1888 | | Activated C Jack Cogburn from the injured list. | | Friday, June 15th , 1888 | | Placed C Jack Cogburn on the 15-day injured list, retroactive to 06/14/1888. | | Saturday, May 12th , 1888 | | Signed free agent SP Larry Mackall to a 1-year contract worth a total of $404. | | Wednesday, May 9th , 1888 | | Activated CF Herbert Davis from the injured list. | | Wednesday, May 2nd , 1888 | | Signed free agent SP Julius Harris to a 1-year contract worth a total of $414. | | Saturday, April 14th , 1888 | | Placed CF Herbert Davis on the 15-day injured list. | | Thursday, March 29th , 1888 | | Signed free agent SP Dave Bradfield to a 1-year contract worth a total of $372. | | Sunday, March 25th , 1888 | | Signed free agent RF Gary Mix to a 1-year contract worth a total of $630. | | Wednesday, March 21st , 1888 | | Signed free agent SS Jim Copple to a 1-year contract worth a total of $358. | | Tuesday, March 20th , 1888 | | Signed free agent RP Jack Carroll to a 1-year contract worth a total of $308. | | Sunday, March 18th , 1888 | | Signed free agent SP Candy Lemmons to a 1-year contract worth a total of $690. | | Signed free agent RP Jim Kiefer to a 1-year contract worth a total of $276. | | Wednesday, March 14th , 1888 | | Signed free agent RF Eli Atwood to a 1-year contract worth a total of $970. | | Tuesday, March 13th , 1888 | | Signed free agent LF Jonathan Coddington to a 1-year contract worth a total of $1,180. | | Wednesday, March 7th , 1888 | | Signed Scouting Director John Rose to a 4-year, $94 per year contract. | |