He became partners with Jesse Lumsden at the beginning of the 2012 season and the duo won their first World Cup Gold medal together in the two-man event on February 3, 2012. It was Rush's second victory in two-man event and his eighth medal in his career on the World Cup circuit. Rush then built on his successes with Lumsden to win a silver medal at the 2012 World Championships. There, despite battling through a stomach virus on his last two runs, as he was in second through the first two runs; he was eventually overtaken by Steven Holcomb pushing him to the silver by 1/100 of a second. In 2013 the duo of Rush and Lumsden won the overall World Cup two-man bobsleigh title.