Al Silverman, quoted by Neyer and James, p. 293. According to Cuban baseball expert Peter C. Bjarkman, Marrero "insists that his main pitch was the slider and that he threw it exclusively at times. See Rob Neyer. "All the Pitchers Who Wouldn't Fit". مؤرشف من الأصل في 2012-02-06. اطلع عليه بتاريخ 2007-03-16.
web.archive.org
Al Silverman, quoted by Neyer and James, p. 293. According to Cuban baseball expert Peter C. Bjarkman, Marrero "insists that his main pitch was the slider and that he threw it exclusively at times. See Rob Neyer. "All the Pitchers Who Wouldn't Fit". مؤرشف من الأصل في 2012-02-06. اطلع عليه بتاريخ 2007-03-16.