Gallen had struck out six, walked one, hit a batter and thrown 88 pitches entering the seventh. The game was scoreless. Gallen is a 24-year-old right-hander. He made his major league debut in June and began the night with a 2-4 record and 2.79 ERA in 12 starts, including five with Arizona since being acquired from Miami.
There have been four no-hitters in the majors this year, with Justin Verlander pitching one last Sunday for Houston at Toronto. The last rookie to throw a no-hitter in the majors was Chris Heston of the Giants, doing it in 2015 against the Mets.
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