| Friday, October 5th , 1888 | | 1B Matt Robertson retired from professional baseball. | | Activated C Bill Palmer from the injured list. | | Wednesday, September 26th , 1888 | | Placed C Bill Palmer on the 14-day injured list, retroactive to 09/25/1888. | | Friday, August 31st , 1888 | | Signed free agent 2B Sam Sells to a 1-year contract worth a total of $314. | | Wednesday, April 25th , 1888 | | Signed free agent 2B Dave Larson to a 1-year contract worth a total of $364. | | Wednesday, April 4th , 1888 | | Signed free agent C Perry Keeler to a 1-year contract worth a total of $364. | | Tuesday, April 3rd , 1888 | | Signed free agent LF Lucky Rash to a 1-year contract worth a total of $308. | | Monday, April 2nd , 1888 | | Signed free agent LF Thomas Elston to a 1-year contract worth a total of $338. | | Friday, March 30th , 1888 | | Signed Scouting Director Jason Tangney to a 2-year, $36 per year contract. | | Thursday, March 29th , 1888 | | Signed free agent SP Jack Montgomery to a 1-year contract worth a total of $416. | | Friday, March 23rd , 1888 | | Signed free agent 2B Don Sutton to a 1-year contract worth a total of $306. | |