2009-10: Jon Gillies skated for the Neponsett River Rats Tier 1 Midget team and played in eight games at Salisbury School in Connecticut after transferring from North Yarmouth Academy. Gillies also attended USA Hockey’s National Development Team Program’s camp in April.
2010-11: Gillies joined the USHL’s Indiana Ice and played 25 games in his first season. Gillies had a record of 15-6-2 as a backup to University of New Hampshire recruit Casey DeSmith and had a 2.82 goals against and .906 save percentage. He appeared in two of five playoff games for the Ice and was 0-1 with a 2.20 goals against and .932 save percentage. Gillies committed to attending Northeastern University in 2012-13. The Quebec Remparts selected Gillies in the ninth round (160th overall) of the 2011 QMJHL Draft.
2011-12: Gillies took over as the starter for the Ice after representing the USA in the 2011 Ivan Hlinka Tournament in the fall. In 53 games for the Ice he was 31-20 with three shutouts and had a 2.77 goals against and .915 save percentage. The Ice reached the Eastern Conference Finals after finishing second behind Green Bay in the regular season and in six playoff games Gillies was 3-3 with a 2.84 goals against and .911 save percentage. Gillies appeared in all four games at the Ivan Hlinka Tournament – starting three of them. He finished 3-1 including a shootout win and had an .892 save percentage. Gillies de-committed from Northeastern in March 2012 after it was announced that Huskies starter Chris Rawlings was returning for his senior season. Gillies was invited to the NHL Draft Combine and ranked sixth amongst North American goalies in Central Scouting’s final rankings prior to the 2012 NHL Draft.
2012-13: Gillies took over as the starting goalie for Providence in his freshman season; appearing in 35 games for the Friars. He won a gold medal with the USA team at the 2013 World Junior Championship. Gillies was 17-12-6 with 5 shutouts and had a 2.08 goals against and .931 save percentage. Providence finished in a three-way tie for third in Hockey East and lost to regular season champion Massachusetts-Lowell, 2-1, in the Hockey East semifinals. Gillies appeared in one game as a back up to John Gibson (Anaheim) at the WJC; stopping all 7 shots he faced in 20 minutes of action.
2013-14: Gillies was one of the top goalies in Hockey East in his sophomore season at Providence College and played for the USA in the 2014 World Junior Championship. He played in 34 of 39 games for Providence and was 19-9-5 with four shutouts and had a 2.16 goals against and .931 save percentage. The Friars finished third in Hockey East and advanced to the conference tournament semifinals, falling to New Hampshire, 3-1. Providence received an at-large bid to the NCAA East Regional. Gillies had 37 saves in a 4-0 shutout of Quinnipiac in the semifinals and stopped 28 of 31 shots in a 3-1 loss to eventual national champion Union College in the regional final. Gillies was 2-2 with a 2.77 goals against and .892 save percentage at the WJC as the USA finished fifth after a 5-3 loss to Russia in the quarterfinals.
2014-15: Gillies signed a three-year entry-level contract with Calgary following his junior season at Providence College after backstopping the Friars to an NCAA Frozen Four championship. Playing in 39 of 41 games for Providence, he was 24-13-2 with 4 shutouts and had a 2.01 goals against and .930 save percentage. Providence finished second to Boston University in Hockey East, receiving an at-large bid to the NCAA tournament after falling to New Hampshire in a best-of-three Hockey East quarterfinal series (all three games were decided by 2-1 scores with both Friars’ losses coming in overtime). Providence defeated Miami (7-5) and Denver (4-1) to capture the NCAA East regional. After a 4-1 win over Nebraska-Omaha in the Frozen Four semifinal the Friars out-lasted Hockey East rival Boston University, 4-3, in the championship game.
Gillies is a big goaltender who primarily plays a butterfly style. He doesn't sit back in his crease, instead challenging shooters and doing a good job of playing the angles. Gillies could stand to work on his rebound control but any concerns about his agility and footwork appear to have been answered. Gillies appears to be one of the top goaltenders from the 2012 class.
Gillies will make his pro hockey debut in 2015-16 after signing an entry-level contract with the Flames in April; foregoing his senior season at Providence. With veterans Jonas Hiller and Karri Ramo as well as prospect Joni Ortio competing for two roster spots with the Flames, it appears Gillies will start the year with new AHL affiliate Stockton. The Thunder are one of five California-based teams that will comprise the league's Pacific Division. Long-term Gillies' size, athleticism and productivity level suggests that he can be a solid NHL starter one day.