HOUSTON—J.R. Richard, a huge, flame-throwing right-hander who spent 10 years with the Houston Astros before his career was cut short by a stroke, has died. He was 71. The team announced his death on Thursday but did not provide any further details. “Today is a sad day for the Houston Astros as we mourn the loss of one of our franchise icons, J.R. Richard,” the Astros said in a statement. “J.R. will forever be remembered as an intimidating figure on the mound and as one of the greatest pitchers in club history. He stood shoulder to shoulder with club icons Larry Dierker, Joe Niekro, and Nolan Ryan, to form a few of the best rotations in club history.” The 6-foot-8 Richard intimidated hitters with an effectively wild delivery, a fastball that often touched 100 mph and an almost unhittable breaking ball. He was selected by the Astros with the second …