| Friday, April 13th , 1888 | | Signed free agent SP John Lacour to a 1-year contract worth a total of $254. | | Signed free agent SP Bill Krauss to a 1-year contract worth a total of $380. | | Saturday, March 31st , 1888 | | Signed free agent 1B Walter Kingsbury to a 1-year contract worth a total of $416. | | Friday, March 30th , 1888 | | Signed free agent 3B Gerald Lincoln to a 1-year contract worth a total of $298. | | Tuesday, March 27th , 1888 | | Signed free agent CF Keith Bowey to a 1-year contract worth a total of $320. | | Sunday, March 25th , 1888 | | Signed free agent RP Tom Coppedge to a 1-year contract worth a total of $264. | | Friday, March 23rd , 1888 | | Signed free agent C Steve Gould to a 1-year contract worth a total of $310. | | Signed free agent LF John Smith to a 1-year contract worth a total of $276. | | Thursday, March 22nd , 1888 | | Signed free agent 3B Harold Leinster to a 1-year contract worth a total of $264. | | Sunday, March 18th , 1888 | | Signed free agent CF Icicle Mullen to a 1-year contract worth a total of $338. | | Wednesday, March 14th , 1888 | | Signed free agent 2B Don Marker to a minor league contract. | | Tuesday, March 13th , 1888 | | Signed free agent SP Charlie Camp to a minor league contract with a major league option. | | Friday, March 9th , 1888 | | Signed free agent CF Ken Thornton to a minor league contract. | | Monday, March 5th , 1888 | | Signed Scouting Director Marcus Revis to a 2-year, $31 per year contract. | |