The D-backs also received outfielder Todd Glaesmann from the Rays to complete the Dec. 3 trade that sent pitchers Heath Bell to the Rays and David Holmberg to the Reds.
Glaesmann was the Rays Minor League Player of the Year in 2012, when he hit .285 with 21 homers and 75 RBIs for Class A Bowling Green and Class A Charlotte.
The 23-year-old was originally selected by the Rays in the third round of the 2009 First-Year Player Draft. Last season, Glaesmann hit .240 with 11 homers and 54 RBIs in 132 games for Double-A Montgomery.
"I would say the player to be named later is someone we value as a prospect," D-backs GM Kevin Towers said at the time of the Bell trade, in which the D-backs also received pitcher Justin Choate. "I'd say probably the key player in the deal, with the players from Tampa Bay, will be the player to be named later."
Jacobs played in both the Red Sox and White Sox organizations last year after being dealt from Boston to Chicago on July 12 in the deal that sent left-hander Matt Thornton to Boston. Jacobs hit a combined .244 with 33 doubles, 13 homers and 66 RBIs for Class A Salem and Double-A Portland in the Boston system and Double-A Birmingham for Chicago.
Initially selected in the 10th round of the 2009 First-Year Player Draft, the 23-year-old Jacobs entered the 2013 season ranked as the 11th-best prospect in the Red Sox system by MLB.com.
Schugel, 24, was 4-6 with a 7.05 ERA in 19 starts for Triple-A Salt Lake last season, after leading the Texas League with a 2.89 ERA in 27 starts in 2012.
Schugel was selected by the Angels in the 25th round of the 2010 First-Year Player Draft.
Steve Gilbert is a reporter for MLB.com. Read his blog, Inside the D-backs, and follow him on Twitter @SteveGilbertMLB. This story was not subject to the approval of Major League Baseball or its clubs.