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.
Harvey: .437 wOBA allowed. Syndergaard: .577 wOBA allowed. Syndergaard has the best fastball velocity among starting pitchers, but when he has to come in with a fastball, he gets hammered; he ranks 153rd of the 156 pitchers who showed up in my search (at least 150 fastballs thrown in hitter's counts).