Erik Cordier arrived in the big leagues Wednesday, overrun by adrenaline and armed with a triple-digit fastball. He entered the game for the San Francisco Giants in the seventh inning, making his MLB debut doing mop up duty in a 9-2 Giants loss . But mop-up duty quickly turned into a radar-gun wowing performance. His first pitch: 100 mph. Then 100, 101, 101 and 100. Those five pitches equaled a strikeout of Colorado Rockies hitter Drew Stubbs. After the game, here's how Cordier described his performance, via CSN Bay Area : "Probably the single most adrenaline I've ever had." Cordier threw 25 pitches for an average of 99.9 mph. He threw 16 pitches that were 100 mph or faster, which, according to Eye on Baseball , ranks Cordier fifth in MLB this season for number of pitches topping 100 mph. And he did it in one game. Aroldis Chapman leads baseball with 331. Carlos Martinez is fourth with 18. If you're wondering why you've never heard of this fireball-throwing prospect before, there's good reason. Cordier isn't a prospect at all. He's 28 and was drafted in 2004. His journey to the big leagues has been 10 years in the making — including Tommy John surgery, two missed seasons and...