It doesn't matter if you are trying to make your next big bet or parlay, tweak your fantasy team, rub something in your buddy's face, or just want to understand the game better, it's always interesting to look at a matchup. Brian Roberts and Justin Masterson have faced off against each other 20 times throughout their careers. Against Justin Masterson, Brian Roberts has maintained a Batting Average of 0.333, higher than his career batting average of 0.276. Justin Masterson's career opposing batting average is 0.259, lower than their face-off average, possibly underperforming against Brian Roberts. Brian Roberts's OPS against Justin Masterson is 0.739, lower than his career OPS of 0.753.

Justin Masterson has struck out Brian Roberts 5 times in 18 at-bats. Against Justin Masterson, Brian Roberts strikes out every 4.000 plate appearances. Brian Roberts's career Plate Appearance per Strikeout is 7.41, striking out less often against Justin Masterson than average. Justin Masterson strikes out a batter every 5.196 plate appearances, striking out Brian Roberts more often than his average.