Note: This article is part of Morningstar’s 2018 Guide to IRAs. A version of this article appeared on Feb. 15, 2011. The opportunity to take tax-free withdrawals on IRA investments and avoid required ...

(The expected conversion rate is determined by league averages in similar circumstances and adjusted based on the strength of the offense and defense.) That produces an overall expected win ...

There are far too many possibilities to fit on a single chart to cover them all, but we can still provide a cheat sheet for the most likely scenarios. The following represents a guide to ESPN's ...

NFL coaches make tough fourth-down and 2-point conversion decisions on every game day. Quantitative analysis can inform those decisions, both for those making calls on the sideline and fans evaluating ...

Seth Walder is an analytics writer at ESPN, specializing in quantitative analysis. He is also a regular on "ESPN Bet Live" and helps cover sports betting. Seth has been at ESPN since 2017. He ...