The NY Yankees are FIRED UP about their big 22-year-old outfielder Clint Frazier -- who says Reggie Jackson is personally mentoring him ... even taking him out for froyo!
Frazier was the #5 overall pick in the 2013 MLB Draft -- and some say he could be the next GREAT home run hitter in the majors.
The Yankees are clearly believers -- and when we got Frazier out in NYC, he told us how he's been learning from one of the all-time greats, Mr. October.
No pressure, kid.
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