Mike Armstrong from the Chronology

Dec 7, 1983 - The Royals trade P Mike Armstrong and minor league C Duane Dewey to the Yankees for slugger Steve Balboni and P Roger Erickson.

Jul 18, 1983 - At Toronto‚ George Brett is robbed of an apparent triple by his teammate Mike Armstrong. Brett hits a liner down the RF line that Armstrong‚ sitting in the bullpen‚ thinks is foul and retrieves. Ump Bill Kunkel decides to send U.L. Washington‚ who scored on the play‚ back the 2B‚ and Brett is sent to 2B. Brett has a homer off Jim Clancy but KC eventually loses ‚ 8-2.