Question: What American professional baseball pitcher who played for the Houston Atros started his baseball journey as Nova Southeastern University?

Context paragraphs:
Ovid C. Lewis: Ovid C. Lewis (August 6, 1932 – January 26, 2011) was an American academic, and was the fourth president of Nova Southeastern University.  Lewis graduated from Duke University and Yale University.  He became the President of Nova Southeastern University in 1994 and was president until 1997.

Nova Southeastern Sharks baseball: The Nova Southeastern Sharks baseball program represents Nova Southeastern University in the National Collegiate Athletic Association's NCAA Division II level.  The Sharks have a very short history, having less than thirty years of play under their belt; however, the sharks have won the Division II championship in 2016, as well as producing several MLB stars, such as J. D. Martinez of the Arizona Diamondbacks, and Mike Fiers of the Houston Astros.  They are coached by Greg Brown.

Ray F. Ferrero Jr.: Ray F. Ferrero Jr. (born January 17, 1934) is an American academic, and was the fifth President of Nova Southeastern University.  Ferrero graduated with his bachelor's degree from St. John's University.  He received his Juris Doctorate from the University of Florida in 1960.  He became the President of Nova Southeastern University in 1998.  Ferrero served as the President of the Florida Bar in 1987.

Nova Southeastern University: Nova Southeastern University (NSU) is a private nonprofit university, with a main campus located on 300 acre in Davie, in the US state of Florida.  Formerly referred to as "Nova" and now commonly called "NSU", the university currently consists of 18 colleges and schools offering over 175 programs of study with more than 250 majors.  The university offers professional degrees in law, business, osteopathic medicine, allopathic medicine, allied health, pharmacy, dentistry, optometry, physical therapy, education, occupational therapy, and nursing.  Nova Southeastern enrolled 24,148 students in the 2014-2015 academic year, and has produced over 170,000 alumni.

Abraham S. Fischler: Abraham S. Fischler (January 21, 1928 – April 3, 2017) was an American academic, and was the second president of Nova Southeastern University.  Fischler graduated from Columbia University in 1959 with his Ed.D.  He went on to serve as Assistant Professor of Science Education at Harvard University and Professor of Education at the University of California, Berkeley before joining the fledgling Nova University in 1966.  Fischler served as Dean of Graduate Studies and Director of the Behavioral Sciences Center from 1966 to 1969.  He became the President of Nova Southeastern University in 1970 and was President until 1992.

George L. Hanbury II: George L. Hanbury II (born 1943) is an American academic, and the President of Nova Southeastern University.  Hanbury graduated with his bachelor's degree from Virginia Polytechnic University, a master's degree from Old Dominion University and his doctorate from Florida Atlantic University.  He became the President of Nova Southeastern University in 2010.

Stephen Feldman: Stephen Feldman (born September 11, 1944) is an American academic, and was the third president of Nova Southeastern University.  He became the President of Nova Southeastern University in 1992 and was president until 1994.  He was president of the Astronaut Memorial Foundation from 1999 to 2012.

Mark B. Sobell: Mark B. Sobell, Ph.D., ABPP, a professor at the College of Psychology of Nova Southeastern University in Fort Lauderdale, Florida, is a specialist in addiction.  Dr. Mark Sobell is nationally and internationally known for his research in the addiction field.  He is a Fellow of the American Psychological Association in Divisions 1, 3, 12, 25, 28, and 50, and is Board Certified in Cognitive and Behavioral Psychology by the American Board of Professional Psychology.  He is the co-director of Healthy Lifestyles: Guided Self-Change at Nova Southeastern University.

Mike Fiers: Michael Bruce Fiers (born June 15, 1985) is an American professional baseball pitcher for the Houston Astros of Major League Baseball (MLB).  He has also played in MLB for the Milwaukee Brewers.  Fiers pitched a no-hitter on August 21, 2015.

Warren J. Winstead: Warren J. Winstead (November 10, 1927 – December 3, 2001) is an American academic, and was the first president of Nova Southeastern University.  Winstead graduated from Harvard University with a PhD.  (NSU says "He obtained his B.A. and M.S. from the University of Richmond.  He later obtained a C.A.S. and Ed.D. from Harvard University.")  He became the President of Nova Southeastern University in 1964 and was president until 1970.

Supporting paragraphs: Nova Southeastern Sharks baseball Mike Fiers
Answer: Michael Bruce Fiers