DXM is also used recreationally. When exceeding label-specified maximum dosages, dextromethorphan acts as a dissociative anesthetic. Its mechanism of action is via multiple effects, including actions as a nonselective serotonin reuptake inhibitor and a sigma-1 receptor agonist.
Aroldis Chapman has thrown the fastest pitch ever recorded, but he has challengers for baseball's hottest heater in 2017. Ever since Aroldis Chapman delivered a 105 mph fastball to Tony Gwynn Jr., Chapman's name has been synonymous with velocity.
Shoaib Akhtar holds the world record for the fastest ever ball at 100.2 mph against England in 2003, while Aroldis Chapman is said to have completed the quickest baseball pitch at 106mph. Their may be one or two exceptions to the rule, but the elite group in both sports will not get any faster.