Daniel Joques O'Brien (born April 22, 1954) is a former Major League Baseball (MLB) pitcher. O'Brien played for the St. Louis Cardinals in 1978 and 1979.
دان أوبراين (بالإنجليزية: Dan O'Brien) هو لاعب كرة قاعدة أمريكي، ولد في 22 أبريل 1954 في سانت بيترسبرغ في الولايات المتحدة. (ar)
Daniel Joques O'Brien (born April 22, 1954) is a former Major League Baseball (MLB) pitcher. O'Brien played for the St. Louis Cardinals in 1978 and 1979. (en)