Christopher Lee Heston (born April 10, 1988) is an American professional baseball pitcher for the Seattle Mariners of Major League Baseball (MLB). On June 9, 2015, he threw the 17th no-hitter in San Francisco Giants franchise history. He played college baseball at East Carolina.

Heston graduated from Bayside High School in Palm Bay, Florida. He played college baseball for two years at Seminole Community College. He was drafted by the Minnesota Twins in the 47th round of the 2007 Major League Baseball Draft but did not sign with the team. In 2008 the Washington Nationals drafted Heston in the 29th round, but he again did not sign and attended East Carolina University. He was then drafted a third time, by the San Francisco Giants in the 12th round in 2009, and signed.

Heston's professional career got off to a rocky start with a 1–5 record and 4.11 ERA in the rookie Arizona League in 2009. In 2010, he finished 5–13 with a 3.75 ERA with the Single-A Augusta GreenJackets. With the Class A-Advanced San Jose Giants in 2011, he improved to 12–4 with a 3.16 ERA and 131 strikeouts. With the Double-A Richmond Flying Squirrels in 2012, he finished 9–8 with a 2.24 ERA, the second-lowest ERA in Flying Squirrels' franchise history. He earned a spot in the Eastern League All-Star Game and was named Eastern League Pitcher of the Year.

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