2005-06: Jimmy Hayes played sophomore season for Noble and Greenough School back in Massachusetts. Was a member of the U.S. National U-17 Team at the 2005 Four Nations Tournament in Russia. Selected to the 2006 U.S. U-17 Select Team that participated at the U-18 Ivan Hlinka Memorial Tournament in the Czech Republic. Selected first overall by the Ohio Jr. Blue Jackets in the 2006 USHL Futures Draft.
2006-07: Played for the U.S. NTDP U-18 team. Was a member of the silver medal U.S. Team at the 2007 IIHF World U-18 Championship in Finland. He was a late addition to the USA WJC evaluation camp, however he was not selected to the squad.
2007-08: This season marked Hayes’ second with the U.S. National Team Development. In 18 games with the U-18 club, he managed to record seven points (2+5) and another 10 points (2+8) in 19 games in the U.S. Natl. Team (NAHL). Hayes also joined the Lincoln Stars (USHL) for 21 games, where he netted four goals and added 11 assists. He had nine postseason points (4+5) with the Stars, dressing in eight playoff games with the club. He signed a Letter of Intent to attend Boston College (Hockey East) in the fall of 2008. In February, he had his USHL rights traded from the Ohio Jr. Blue Jackets to Lincoln. Shortly thereafter, Hayes received a release from the NTDP program and joined the Stars. Hayes was chosen in the second round, 60th overall, of the 2008 NHL Draft by the Toronto Maple Leafs.
2008-09: Hayes appeared in 36 games as a freshman at Boston College, scoring 8 goals, 5 assists for 13 points. He also scored 2 goals in 6 games with the US U20 team at the World Junior Championships.
2009-10: Hayes broke out towards the end of his sophomore season at Boston College, finishing the year with 13 goals, 22 assists for 35 points in 42 games. The winger scored 5 goals and 7 assists over his final 8 games of the year at the Hockey East and NCAA tournaments, helping Boston College to its fourth National Championship in school history.
2010-11: As a junior at Boston College, Hayes ranked second on the team with 21 goals and third on the team with 33 points in 39 games. He continued to be a big-game player for the Eagles, scoring 2 goals, 2 assists in 2 Beanpot games, including the overtime game-winner in the tournament's championship game against Northeastern, and finishing with a strong postseason of 5 goals, 2 assists for 7 points in 5 games in the Hockey East playoffs and NCAA tournament. Hayes finished the year on an ATO with Rockford in the AHL, but did not register a point in 7 games.
2011-12: Hayes made his NHL debut with Chicago on December 30th after opening the year with AHL Rockford. He appeared in 31 games for the Blackhawks during the regular season and skated in two playoff games. He scored 5 goals with 4 assists and was minus-three with 16 penalty minutes during the regular season and in two playoff games was minus-one with 15 penalty minutes. Chicago finished fourth in the Central Division and lost to Phoenix in the first round. Hayes scored 7 goals with 16 assists in 33 games with Rockford and was minus-three with 11 penalty minutes. The IceHogs missed the AHL playoffs.
2012-13: Hayes appeared in 10 games for Chicago in his second pro season – spending much of the year with the Blackhawks' AHL affiliate Rockford. After some impressive play as an NHL rookie in 2011-12, Hayes was not inserted into Chicago's lineup until March 14th. He scored 1 goal with 3 assists and was an even plus/minus with no penalty minutes in the regular season and was with Chicago during their Stanley Cup championship playoff run but didn't play in any games. Playing center as well as winger with the IceHogs, Hayes scored 25 goals with 20 assists and was an even plus/minus with 23 penalty minutes. Rockford finished third in the Midwest Division, two points behind Milwaukee for the final Western Conference playoff spot.
Hayes has a big body, works hard and plays very well in a team concept. With his size, you expect Hayes to be a punishing power forward. While he's not going to shy away from the tough stuff, he is really known for his hands and work around the net. He is a big, strong, forward who is learning to use his power as he continues to grow into his frame. He is also noted as fast skater with very big and long strides.
Much of Jimmy Hayes' sophomore pro season was spent in the AHL, where he spent parts of the season playing out of position at center. With the Blackhawks needing to get cheaper in their bottom-six forwards going into 2013-14, Hayes will be one of several wingers in the mix for the final roster spots in training camp. His game fits more as a complementary winger on a scoring line than as an an anchor on a checking line, but Hayes could see that opportunity at some point during the season.
Hayes was dealt along with Dylan Olsen by the Chicago Blackhawks to the Florida Panthers in the deal that sent Kris Versteeg back to the Blackhawks.