| Friday, May 18th , 1888 | | RP Sam Marcum did not elect for free agency and will remain in the St. Joseph organization. | | Sunday, April 8th , 1888 | | Signed free agent SP Beau McHugh to a 1-year contract worth a total of $416. | | Monday, March 26th , 1888 | | Signed free agent SP Harlan Beesley to a 1-year contract worth a total of $400. | | Thursday, March 22nd , 1888 | | Signed free agent SP Sam Tanner to a minor league contract with a major league option. | | Monday, March 19th , 1888 | | Signed free agent RP Sam Marcum to a minor league contract with a major league option. | | Signed free agent RP Dan Falter to a minor league contract with a major league option. | | Sunday, March 18th , 1888 | | Signed free agent RP Buddy Tackett to a minor league contract with a major league option. | | Signed free agent RP Ron Chase to a minor league contract with a major league option. | | Signed free agent RP Rich Hurley to a minor league contract with a major league option. | | Saturday, March 17th , 1888 | | Signed free agent RP Don Woodward to a minor league contract with a major league option. | | Wednesday, March 14th , 1888 | | Signed free agent SS Charlie Klein to a minor league contract. | | Saturday, March 10th , 1888 | | Signed free agent RP Bill Silver to a minor league contract with a major league option. | | Thursday, March 1st , 1888 | | Signed Scouting Director John Gorman to a 2-year, $56 per year contract. | |