However, none of these factors holds true when it comes to predicting MLB run totals. While game run totals are available, baseball spreads are always +/- 1.5 runs, which isn't exactly reflective of the predicted margin. Also, team run scores are not used in any way during games so they have no effect on what happens on the field. In fact, using statistical analysis, we can predict that the Chicago Cubs will finish with 98 wins this season. The Washington Nationals have the most talent up and down their lineup, but look like they're heading toward 100 losses. Run values are calculated from a variety of sources including batting average, home runs, stolen bases, and even strikeout rates. A stat called "wins above replacement" or "WAR" is used to measure a player's contribution to his team. By comparing each player's WAR to his team's total, you get a sense of how many wins each club has contributed this season.