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.
The speed of a baseball is measured using a Radar Gun. Today, in the late 1990s pitchers can throw over 100 miles per hour (160 km/h or 45 m/s). Matt Anderson, has thrown the fastest pitched baseball which measured 103 miles per hour (166 km/h or 46.0 m/s). This time was measured in the past 1999 baseball season.