The 26-year-old McKinney was a first-round pick (No. 24 overall) by the Athletics back in 2013 and has since bounced around the league in a series of high-profile swaps.
Some prospects could be major contributors on playoff rosters, while others will get looks in preparation for 2020. Either way, these 10 MLB prospects could get their chances at a major league call-up in the final month of the regular season.