In the 5,437 official at-bats in his baseball career, O’Brien has earned a batting average of .261 in addition to 1,421 base hits. His OBP sits at .336 and he holds a career OPS of .356. He has scored 654 runs in addition to having 736 runs batted in. O’Brien has drawn a free base 641 times while striking out on 563 plate appearances. He has hit a home run 169 times, in addition to having 2,224 bases in total and also a .020 slugging percentage.
