2009-10: Hinostroza was the fourth-leading scorer for the Chicago Mission U16 midget team. In 34 games he scored 13 goals with 21 assists and had 38 penalty minutes. Hinostroza attended USA Hockey's Central District U16 camp and was selected by Waterloo in the first round (fourth overall) of the 2010 USHL Futures Draft. He was invited to attend the United States National Team Development Program in Ann Arbor and committed to playing college hockey at Notre Dame in 2013-14.
2010-11: Hinostroza signed with Waterloo in the USHL – foregoing the US NDTP. In 50 games with the Black Hawks he scored 8 goals with 14 assists and was minus-one with 36 penalty minutes. Waterloo finished seventh in the USHL's Eastern Division and was swept by Indiana in a two-game playoff series. Hinostroza did not play in the series with the Ice after suffering a late-season knee injury that required surgery.
2011-12: Hinostroza finished second in scoring on the Black Hawks behind 16-year-old Taylor Cammarata as Waterloo was third in the Western Division in the USHL's re-aligned divisions. He represented the USA in the 2012 U19 World Junior A Challenge. Hinostroza scored 20 goals with 24 assists and was plus-11 with 56 penalty minutes in 55 games for Waterloo. Waterloo advanced to the USHL Clark Cup playoff finals, losing to Green Bay in a decisive Game 5 but Hinostroza missed the playoffs due to an "upper body injury". Hinostroza was the third-leading scorer for the USA at the WJAC, scoring 1 goal with 3 assists in five games. Hinostroza was ranked 115th amongst North American skaters in Central Scouting's final rankings and was selected by Chicago in the sixth round (169th overall) of the 2012 NHL Draft.
A hard-nosed forward with offensive skill. Hinostroza is aggressive on the forecheck and in getting to the front of the net, where he has the hands to set up his teammates or hit the back of the net himself. His 5'9 frame will not do him any favors as he moves up to college hockey in 2013, but he remains a versatile, hard-working forward who should still be able to carve out a role for himself at the next level.
Hinostroza will skate in his third USHL season with Waterloo for the 2012-13 season before joining the University of Notre Dame for 2013-14. He is definitely a project, but Hinostroza has the potential to develop into a top-nine forward at the pro level.