Complex sentence: In July 2015 Boston Red Sox David Ortiz disputed the reality of Williams ball actually going that far saying that he has sat in the red seat and does not believe that anyone could hit a ball to that location.
Split into simpler sentences: In July 2015 Boston Red Sox slugger David Ortiz disputed the credibility of Williams actually hitting a ball to the red seat. Ortiz said he has sat in the Red Seat and that he believes it is too far for anyone to actually hit a ball to that location.