Almost all of Arizona’s Opening Day wins have been close: of the 11 wins, only a couple have been by a margin of more than two runs, with none being by more than four. To figure out an objective measure of which was the most exciting, I used “Leverage Index” (LI), a measure of how important a particular situation is in a baseball game - it depends on the inning, score, outs, and number of players on base. The average LI for the D-backs is a metric of overall “excitement” from our fan point of view: 1.