The metric of Outs Above Average is a tool that has been used to measure individual and team outfield defensive performances regarding run prevention. As of today, that metric has now been translated to include infielders as well and on Wednesday, the rankings for the 2019 season were released. The Texas Rangers finished 2019 with an infield OAA of +4, good for 13th in the MLB.
For an in depth breakdown of how OAA is calculated for both outfielders and infielders you can visit the MLB.com glossary. In short, the metric takes into account where a player was positioned as well as the time they have to reach the ball in play, time to make said play (baserunner speed) and distance he is from where the ball has to be to make the play.