The next year Almutairi travelled to Lyon to compete in the 2013 IPC Athletics World Championships. He was again forced to compete in the T34 events and failed to get out of the heats in the 100m, 200m and 400m races. His first major medal success came the following year at the 2014 Asian Para Games in Incheon where, with a weaker field than in the Paralympics or the World Championships, he was able to win two silver medals in the 100m and 200m T34 races. Throughout 2015 Almutairi continued to improve his times, and set a new world record for the 200m at an IPC Grand Prix in Nottwil, Switzerland. Later that year he represented Kuwait at his third World Championship, this time in Doha, Qatar. This time enough T33 athletes were available for Almutairi to race in his actual classification in a single race, the 100m. In the final he set a championship record of 17.53 to beat his nearest rival, Britain's Dan Bramall, by over a second and a half. Almutairi also competed in the 800m T34, but he finished a distant 8th.