In Teheran's first start of his major league career, the youngster threw 4.2 innings, gave up three runs on four hits and struck out one. Oh, and this was against a veteran Philadelphia Phillies lineup.
With the injury sustained by Brandon Beachy in his last start, Teheran is getting another spot start. This time around he is scheduled to face the Arizona Diamondbacks, who have one of the weaker offenses in the league, on Wednesday.
Teheran impressed in some ways in his debut, but he left some not feeling the hype. This time around, though, Teheran could show the dominating stuff we all want to see from him.
Here are five ways that he will be better this time around.