Based on a few extra inning games I've watched with this rule, it feels like putting a runner in scoring position helps the team score a run in the top of the inning, but then the team in the bottom of the inning also drives in their runner from scoring position. The Red Sox-Rays game on Tuesday went 12 innings before it finished after both teams scored one run in the 11th. I wonder if anyone has run a statistical analysis to see if this rule actually shortens extra inning game or if this tit-for-tat makes it essentially the same as by the original rules.