106.

Cincinnati Reds reliever Aroldis Chapman threw a pitch that registered 106 on the stadium gun last night. The only other official gun had it at 103 but either way, that is some serious heat. Has to remind you of SI's 1985 April fools prank that way too many people took seriously, "The Curious Case of Sidd Finch". In the piece/prank, SI alleged that the Mets had an eccentric prospect that wore one shoe and could throw 168 mph. It took until April 15th for SI to tell everyone it was a prank, something they would never get away with in the age of the internet.