6/20 brought 4 more returns (see above for other TTMs posted today):
Chris Heston c/o Fresno Grizzlies in 6 days
Great return from the Giants' pitching prospect. He had a breakout year in 2012 with a 2.24 ERA through 148.2 IP but has struggled a bit this year in the hitter-friendly International League.
Adrian Marin c/o Delmarva Shorebirds in 13 days
What a nice auto from the 2012 3rd round pick by the Orioles and their no. 11 overall prospect entering the 2013 season.
Mike O'Neill c/o Springfield Cardinals in 10 days
O'Neill was originally drafted all the way back in the 31st round of 2010, but has proven to be an absolute steal for the Cardinals, hitting .312 in 2011, .359 in 2012, and .322
so far in AA this year. If he keeps it up, he should make it to St. Louis before long!
Nick Maronde c/o Arkansas Travelers in 6 days
Another lightning fast return. Maronde earned himself a callup last year after dominating as a SP over three minor league levels. He has since been sent to the bullpen, where he has raised both his K/9 as well as his ERA.