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. Don Mattingly and Julio Valera have faced off against each other 11 times throughout their careers. Against Julio Valera, Don Mattingly has maintained a Batting Average of 0.273, lower than his career batting average of 0.307. Julio Valera's career opposing batting average is 0.289, higher than their face-off average, possibly overperforming against Don Mattingly. Don Mattingly's OPS against Julio Valera is 0.818, lower than his career OPS of 0.829.

Julio Valera has struck out Don Mattingly 0 times in 11 at-bats. Against Julio Valera, Don Mattingly strikes out every 0.000 plate appearances. Don Mattingly's career Plate Appearance per Strikeout is 17.39, striking out less often against Julio Valera than average. Julio Valera strikes out a batter every 7.777 plate appearances, striking out Don Mattingly more often than his average.