The Astros have signed 10th Round pick Austin Nicely, and terms have not been disclosed.
UPDATE: Jim Callis is reporting that Nicely signed for $610,000. This is between the 87th and 88th overall pick value, mid-3rd Round. Slot value for the pick was $139,400, so the Astros went over by $470,600 to sign Nicely.
This leaves only the two North Carolina players still in the College World Series unsigned in the Top 10 Rounds, and they have a little more than $1m to play with.