I got some recent prospect cards signed with this TTM success from Joey Morgan. He signed a 2018 Topps Pro Debut, a 2017 Bowman Chrome and 2017 Bowman (both below).
Morgan (b. 1996) was a 3rd round pick by the Tigers in the 2017 June Amateur Draft out of the University of Washington. He has reached as high as AAA and so far has 116 hits, 6 home runs and a .211 batting average across 3 seasons in the minors.
I mailed to Morgan on September 2 and got the cards back on September 24, for a 22-day TAT.