Usain Bolt could log his 50th sub-10 seconds 100-metre clocking in 2016. Bolt, the 2008 and 2012 Olympic 100 and 200 metres champion, has already run 45 such races in his career. With the Olympic Games in the offing, he could well reach the milestone next season. The tall man moved his total up by four in 2015 with twin times of 9.87 seconds in the London Diamond League meet and clockings of 9.95 and 9.79 at the World Championships. Hampered by a back injury in 2015, he chose not to race after the World Championships. If he is fit throughout next season, he might even surpass retired American Maurice Greene, who broke the 10-second barrier 53 times. Greene has the second highest total of sub-10 times, far behind Jamaica’s Asafa Powell, who has 93 of them. Greene might also be overtaken by fellow American Justin Gatlin. The 100-metre runner-up to Bolt in both the 2013 and 2015 World Championships, Gatlin has 46 sub-10 races under his belt. He, too, should reach his half-century in 2016 if he stays as fast as he has been recently. Gatlin fired off 10 sub-10-second marks in 2013, eight in 2014 and seven in 2015. In 2008 and 2009, when he set world records of 9.69 and 9.58 seconds, respectively, Bolt reeled off fast times almost at will. In 2008, he beat 10 seconds 10 times, with seven more in 2009. Next on the list of sub-10 mass producers are 2007 World champion Tyson Gay and his USA teammate Mike Rodgers. The latter has crossed the 10-second threshold 38 times, with Gay hitting the target on 36 occasions. Statistics for this article were drawn from www.alltime-athletics.com.