The 6-foot-4, 215-pound righty from Pepperdine was a preseason All-America with the Waves but was limited to fives games due to forearm and elbow soreness. Hunter struck out 19 in 18 2/3 innings and the A's took the gamble that he'll be healthy.
"He's got a premium arm and was one of the premium picks in the Draft, and we took him understanding he's not fully healthy right now," A's scouting director Eric Kubota said in June.
With Hunter in the fold, the A's signed all of their top 10 draftees and 16 of their top 20. Left unsigned from the first 20 picks were first baseman Zachary Elgie, who was selected in the 12th round, third baseman Bradley Glenn (17th); right-hander Rayan Gonzalez (18th).
The A's, who signed a total of 27 players from this year's Draft, made relatively short work of signing their first-rounder, securing Jemile Weeks on July 8 with the help of a $1.9 million signing bonus.
The younger brother of Brewers second baseman Rickie Weeks, Jemile Weeks earned first team All-ACC honors at the University of Miami where he batted .363 with 13 homers and 62 RBIs in 63 games.
Weeks, who is playing with the Class A Kane County Cougars, was hurt last month during a game against the Peoria Chiefs at Wrigley Field. He was hitting .297 with a .422 on-base percentage and a .408 percentage in 19 games.
For the players who did not sign, the A's will receive a compensation pick in next year's Draft. If the option still remains, unsigned players can return to school, otherwise they must hook up with an independent club and wait until next year's Draft.
Mike Scarr is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.