CHICAGO -- Ian Happ and Eloy Jimenez, the top two prospects in the Cubs organization, according to MLB.com's rankings, will play for the Mesa Solar Sox in the Arizona Fall League.
Happ and Jimenez will be joined by catcher Victor Caratini, ranked No. 15 on the Cubs' Top 30 Prospects list, and four pitchers, including right-hander Duane Underwood, who is ranked sixth. Underwood, 22, a second-round pick in 2012, will start for Mesa.
The other Cubs prospects on the Mesa roster include three right-handed pitchers. James Farris, who starred at the University of Arizona before he was drafted by the Cubs in the ninth round in 2014, will be joined by Ryan McNeil, a third-round pick in 2012 who has played at Class A Myrtle Beach this season, and Steve Perakslis, a 21st-round selection in 2012.
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Jimenez, 19, was named the Midwest League Most Valuable Player, Prospect of the Year, and an end of the season All-Star. While playing for Class A South Bend, he has led the league in doubles, slugging percentage, OPS and RBIs and was among the top five in batting average and extra base hits.
Happ, 22, the Cubs' first-round pick in the 2015 Major League Draft, played at Class A Myrtle Beach and also Double-A Tennessee this season.
• Chris Coghlan, who was been on the disabled list since Aug. 17 with a right rib contusion, was expected to be activated on Thursday when rosters expand. Cubs manager Joe Maddon did not reveal any other potential callups.
Carrie Muskat has covered the Cubs since 1987, and for MLB.com since 2001. She writes a blog, Muskat Ramblings. You can follow her on Twitter @CarrieMuskat and listen to her podcast. This story was not subject to the approval of Major League Baseball or its clubs.