2008-09

In his second full World Cup season, Rush struggled to crack the top-10 in both two-man and four-man, although he did experience a breakthrough two-man result during a February 2009 World Cup race on the Olympic course in Whistler. Rush and brakeman Lascelles Brown slid to a 4th-place finish, the best World Cup result of Rush's career. Rush finished the 2008-09 World Cup season ranked 11th in two-man and 15th in four-man.

At the 2009 World Championships in Lake Placid, USA, Rush and Brown finished 7th in two-man, while Rush's four-man sled of Brown, Rob Gray and Chris LeBihan finished 12th. Once again, both results marked new career-best finishes for Rush at the World Championships.

2007-08

Rush experienced his first full World Cup season, and showed gradual signs of improvement throughout the year. Early in the season, Rush earned his first World Cup top-10 finishes, including a 7th-place four-man finish in Park City, USA and an 8th-place two-man finish in Lake Placid, USA.

At the 2008 World Championships in Altenberg, Germany, Rush would improve on his 2007 World Championship results, finishing 13th in two-man and 16th in four-man.

2005-06, 2006-07

In 2005-06 Rush graduated to the Europa Cup, a step up from the America's Cup. In 2006-07. Rush also began to gain World Cup experience, occasionally racing in World Cup events.

On January 20, 2007, Rush entered his first World Cup event - he finished 22nd of 27 sleds in a two-man competition in Igls, Austria. One day later, Rush finished 22nd in his first World Cup four-man competition, also held in Igls.

In February 2007, Rush competed in his first World Championships in St. Mortiz, Switzerland. He finished 17th in two-man and 26th in four-man.

2004-05

Rush attended his first bobsleigh recruitment camp in the summer of 2004 at the Canada Olympic Park in Calgary. Although he initially began training as a brakeman, a pulled hamstring caused Rush to focus on becoming a pilot instead. As a result, Rush immediately started his competitive career as a pilot (many bobsleigh athletes start as a brakeman and graduate to the role of pilot).

Rush spent the 2004-05 season on the America's Cup circuit, an entry-level competitive tour.