"Slegers is signed and he's on his way to [Rookie League] Elizabethton," Ryan said.
Slegers, who is 6-foot-9, 250-pounds, was 9-2 with a 2.04 ERA in 18 starts at Indiana University.
The Twins also signed their second-round pick, pitcher Ryan Eades out of LSU, earlier this week. Eades struck out 78 in 100 innings and posted a 2.79 ERA for the Tigers. The 6-foot-2, 195-pound right hander also logged an 8-1 record.
Minnesota has now come to terms with 26 of its 40 picks. Of the 26 signings, 24 are among the club's top 25 picks.
Kelly Erickson is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.