Ty Isaac (from left), Tyler Reitz, Keith Craig, Cody Crater and Rachel Zampa sign college letters of intent Wednesday at Joliet Catholic. | Matthew Grotto~Sun-Times Media
Ty Isaac (center) jokes with his mother Karen (left) and Keith Craig (right) after Isaac and Craig signed college letters of intent for football at Joliet Catholic Academy Wednesday, Feb. 6, 2013, at 1200 N. Larkin Ave. in Joliet. | Matthew Grotto~Sun-Times Media
Ty Isaac (center) sits near his parents Tyrone (left) and Karen (right) after signing a letter of intent for the University of Southern California at Joliet Catholic Academy Wednesday, Feb. 6, 2013, at 1200 N. Larkin Ave. in Joliet. | Matthew Grotto~Sun-Times Media
(From left to right) Keith Craig, Ty Isaac, Rachel Zampa, Tyler Reitz and Cody Crater pose for photos for familiy and friends after signing college letters of intent at Joliet Catholic Academy Wednesday, Feb. 6, 2013, at 1200 N. Larkin Ave. in Joliet. | Matthew Grotto~Sun-Times Media
(From left to right) Ty Isaac, Tyler Reitz, Keith Craig, Cody Crater and Rachel Zampa get an introduction from football coach Dan Sharp before signing college letters of intent at Joliet Catholic Academy Wednesday, Feb. 6, 2013, at 1200 N. Larkin Ave. in Joliet. | Matthew Grotto~Sun-Times Media
A crowd gathers for signing day for Ty Isaac, Tyler Reitz, Keith Craig, Cody Crater and Rachel Zampa at Joliet Catholic Academy Wednesday, Feb. 6, 2013, at 1200 N. Larkin Ave. in Joliet. | Matthew Grotto~Sun-Times Media
Ty Isaac at Joliet Catholic Academy Wednesday, Feb. 6, 2013, at 1200 N. Larkin Ave. in Joliet. | Matthew Grotto~Sun-Times Media
Rachel Zampa at Joliet Catholic Academy Wednesday, Feb. 6, 2013, at 1200 N. Larkin Ave. in Joliet. | Matthew Grotto~Sun-Times Media
Keith Craig at Joliet Catholic Academy Wednesday, Feb. 6, 2013, at 1200 N. Larkin Ave. in Joliet. | Matthew Grotto~Sun-Times Media
Cody Crater at Joliet Catholic Academy Wednesday, Feb. 6, 2013, at 1200 N. Larkin Ave. in Joliet. | Matthew Grotto~Sun-Times Media
Tyler Reitz at Joliet Catholic Academy Wednesday, Feb. 6, 2013, at 1200 N. Larkin Ave. in Joliet. | Matthew Grotto~Sun-Times Media
Joliet Catholic running back Ty Issac put conjecture to rest Wednesday when he signed a National Letter of Intent to attend the University of Southern California and play for coach Lane Kiffin. It seemed forever since he committed to the Trojans on May 15. “It …