McKinstry was added to the roster for Wednesday's NL Wild Card Game against the Cardinals.
EDGE Analysis
McKinstry spent nearly a month at Triple-A Oklahoma City to close out the regular season, and he slashed .286/.356/.571 with four homers, 18 runs, 13 RBI and three stolen bases across 20 appearances in the minors. He'll likely be available off the bench in Wednesday's playoff matchup.